Versions 0.1 - 0.57 - liviu@lalescu.ro
- Versions 0.1 - 0.57 - no user interface, plenty of bugs.
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Versions 1.0 - 1.17 - liviu@lalescu.ro
- Version 1 and above - added text menu.
- Version 1.5 and above - added Qt GUI.
- Version 1.8 and above - removed the text menu :-)
- Version 1.12 - used valgrind to track down an annoying crashing bug. Thanx!
	This was not the only time I used valgrind to hunt for bugs
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Versions 2.0 - 2.6 - liviu@lalescu.ro
- Version 2.0 and above - better Qt GUI.
- Version 2.1
- Version 2.2
- Version 2.3 - added conflicts reporting.
- Version 2.4 - made a separate list for subjects (not depending on teacher).
- Version 2.5 - crash bugs fixed.
- Version 2.6 - crash bugs fixed.
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Versions 2.7.0 - 2.7.8 - liviu@lalescu.ro
- Version 2.7.0 - added CHRActivitiesNotSameDay;
	- added split activities (for high-schools);
	- changed numbering of the versions (Carsten's suggestion).
- Version 2.7.1 - added CHRTeachersNoMoreThanXHoursContinuously.
- Version 2.7.2 - implemented menu item Timetable/Show(teachers) (shows the the timetable for a certain teacher).
- Version 2.7.3 - user can change the number of hours and days;
	- list of activities - fixed bug in the interface.
- Version 2.7.4 - improved the add custom hard restriction and add custom soft restriction dialogs;
	- allowing to split an activity in two ways: daily exclusion or no daily exclusion;
	- added CHRTeachersSubgroupsNoMoreThanXHoursDaily (no teacher can teach to a subgroup more than x hours daily) - to be checked thoroughly;
	- added the possibility to record a position of the simulation on the hard disk and the subsequent retrieval.
- Version 2.7.5 - bug fixes in activities form.
- Version 2.7.6 - bug fix in load recorded position.
- Version 2.7.7 - small bug fixes.
	- the main engine, interface and intermediate objects are now placed in separated directories
- Version 2.7.8 - small improvement in students view timetable form
	- now, the user can click on the table to see details about the activity
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Versions 2.8.0 - 2.8.5 - liviu@lalescu.ro
- Version 2.8.0 - bug fixes
	- added CSRActivityPreferredTime (user may specify for each activity a preferred 
	time) - (suggested by Sajith V. K.)
- Version 2.8.1 - bug fixes
- Version 2.8.2 - added CHRActivitiesSameTime (idea by Sajith V. K., to handle activities
	having more teachers or more groups from different years. This can be done
	using dummy groups or dummy teachers).
	- increased the number of split activities to 8 in the GUI.
	- now, any unallocated activity has weight 10000.
- Version 2.8.3 - bug fix - GUI restriction CHRTeacher(Year, Group, Subgroup)NotAvailable
	corrected, by enabling the day and hour.
- Version 2.8.4 - small changes in the interface.
- Version 2.8.5 - changed the name to FET (or fet)
	- added break periods (with CHRBreak)
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Versions 2.9.0 - 2.9.6 - liviu@lalescu.ro
- Version 2.9.0 - bug fix in ConstraintStudentsYearNotAvailable
	- changed Restriction into Constraint, now you can implement any constraint 
	as compulsory or not
- Version 2.9.1 - small crash bug fixed (when erasing a year and pressing Cancel)
	- added ConstraintActivitiesNotSameTime
- Version 2.9.2 - bug fix when reading constraints (thanks to Ian Fantom, Marc Falcon)
- Version 2.9.3 - bug fix when reading constraints (thanks to Michael Towers)
- Version 2.9.4 - lots of bug fixes (thanks to Michael Towers)
- Version 2.9.5 - bug fix, new activity is added with correct index
- Version 2.9.6 - bug fixes
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- Version 2.10.0 - liviu@lalescu.ro
	- bug fixes (maybe added a few new ones :-)
	- FET now uses QString, QValueStack, QDomDocument, QFile and QTextStream classes
	 (Imre Nagy's suggestion).
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- Version 3.0.0 pre1 - liviu@lalescu.ro
	- activities list is now a qt list (QPtrList)
	- constraints list is now a qt list (QPtrList)
	- bug fixes
	- max hours per week is now short integer (instead of char)
	- removed population initialization method from the ini file and added it 
	into the GUI
	- made the simulation somewhat faster, by getting rid of function realTimes(i)
- Version 3.0.0 pre2 - liviu@lalescu.ro
	- subjects, teachers, students are now QPtrList.
	- the file open/saveas dialog now open in working directory
- Version 3.0.0 pre3 - liviu@lalescu.ro
	- improved speed by modifying a bit the fitness calculation.
- Version 3.0.0 pre4 - liviu@lalescu.ro
	- improved structure of the output xml files
	- began working at space allocation
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Versions 3.1.0 - 3.1.4 - liviu@lalescu.ro
- Version 3.1.0
	- now the years and groups can have overlapping subgroups (uff)
	- the activities support more than one set of students (year, group or subgroup)
- Version 3.1.1
	- improved speed (instead of 9 seconds, I get now 7 seconds on a test), by
	reducing redundant computations for teachers and students conflicts
- Version 3.1.2
	- space (room) allocation (sigh of relief)
- Version 3.1.3
	- fixed bug when reading ConstraintBreak
	- leak bug fixed, thanks to Valgrind (duplicated constraints were not deleted
	if Rules::addTimeConstraint returned false)
	- bug fix: adding/removing constraints and reading input files resets
	variable Rules::internalStructureComputed to false
	- corrected ConstraintStudentsEarly
- Version 3.1.4
	- improved (very little) ConstraintActivitiesNotSameDay
	- fixed activity bug: comparing 2 activities for equality now works
	- now the user can see whether the activities have daily exclusion or not
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Versions 3.2.0 - 3.2.9 - liviu@lalescu.ro
- Version 3.2.0
	- changed the GUI: the user can see all constituent activities and constraints
	- saving now even basic constraints
	- the GUI now has filters when viewing constraints and activities
- Version 3.2.2
	- now the program compiles in Windows, under VC 6.0
- Version 3.2.3
	- corrected small bug in ConstraintActivitiesSameTime and
	ConstraintActivitiesNotSameTime
	- ConstraintActivitiesSameTime now works much better for compulsory constraints.
	I considered that it is better to repair each chromosome so that all
	the compulsory constraints of this type are fulfilled, before evaluating it.
	This change was suggested by an input data file from Ian Fantom,
	which contained a lot of this constraints and the old version was failing
	lamentably.
- Version 3.2.4
	- began internalization (using qtranslator)
	- began Romanian translation
- Version 3.2.5
	- small bug fix
	- improved internalization
	- improved Romanian translation
- Version 3.2.6
	- now, compulsory ConstraintActivityPreferredTime is implemented better
	(as a repairing of the choromosome).
	- improved speed by avoiding two passes through the internal constraints list
	when computing hard and soft fitness (compulsory or non-compulsory conflicts)
- Version 3.2.7
	- Added a FAQ
- Version 3.2.8
	- Made the simulation faster (very little) by getting rid of the logging part
- Version 3.2.9
	- bug fix in ConstraintActivityPreferredTime (thanks to Michael Towers)
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Versions 3.3.0 - 3.3.1 - liviu@lalescu.ro
- Version 3.3.0
	- small bug fixes in the interface
- Version 3.3.1
	- bug fix when reading ConstraintStudentsNotAvailable
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Versions 3.4.0 - 3.4.8 - liviu@lalescu.ro
- Version 3.4.0 (pre1 and pre2)
	- Each activity supports several teachers (3, but this can be easily extended)
	- Now, the default population size is 2048 (Michael Towers's suggestion).
	- Bug fixes in ConstraintTeachersNoMoreThanXHoursContinuously
	- Changed ConstraintStudentsNotAvailable into ConstraintStudentsSetNotAvailable
		changed ConstraintActivitiesSameTime into ConstraintActivitiesSameStartingTime
		changed ConstraintActivitiesNotSameTime into ConstraintActivitiesNotOverlapping
		changed ConstraintStudentsNoWindows into ConstraintStudentsNoGaps
		changed ConstraintTeachersNoWindows into ConstraintTeachersNoGaps
		changed ConstraintStudentsNotTooMuch into ConstraintStudentsMaxDaysLength
- Version 3.4.1 (pre1 and pre2)
	- Improvements in constraints names
	- New constraints
- Version 3.4.2
	- Improvements in constraints names
	- New constraints
- Version 3.4.3
	- Small bug fix in ConstraintStudentsSetNHoursDaily (thanks to Michael Towers)
- Version 3.4.4
	- Made the simulation somewhat faster, by avoiding an unnecessary sorting
	when the evolution method is three-tournament selection
- Version 3.4.5
	- Addings in FAQ
	- Modified the parameters of the genetic algorithm and now FET can deal better
	with broken ConstraintNoGaps (students or teachers).
- Version 3.4.6
	- The user can now modify the population number from the interface
	- The default population size is now 8192
- Version 3.4.7
	- Bug fix, crashing when logging ConstraintStudentsEarly
- Version 3.4.8
	- FET allows now to use two ConstraintMinNDaysBetweenActivities for the same activities
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Versions 3.5.0 - 3.5.4 - liviu@lalescu.ro
- Version 3.5.0
	- Added ConstraintActivityPreferredTimes (suggested by Michael Towers)
	- Added ConstraintStudentsSetIntervalMaxDaysPerWeek (suggested by Simon Getti)
	- Added ConstraintActivityEndsDay (suggested by Michael Towers)
- Version 3.5.1
	- Added an interface to ConstraintActivityPreferredTimes
- Version 3.5.2
	- Bug fix in selecting the first or second best out of three chromosomes (3 tournament)
- Version 3.5.3
	- Bug fix - the maximum number of teachers is now 200, instead of 100 (thanks to
	Gibbon Tamba for reporting this potential bug)
- Version 3.5.4
	- When viewing the timetable, it shows the subject for the students and the
	students for the teachers (suggested by Sajith V. K.)
--------------------------------------------------------------------------------
Versions 3.6.0 - 3.6.7 - liviu@lalescu.ro
- Version 3.6.0
	- Each room is now represented by name, type and capacity
	- Added ConstraintRoomNotAvailable
	- Added ConstraintTeachersNoMoreThanXHoursDaily
	- Added ConstraintRoomTypeNotAllowedSubjects
- Version 3.6.1
	- Improved the days dialog
	- Improved the hours dialog and added names for the hours. The file structure
	was a bit changed, but you can open older files and save them as new ones.
- Version 3.6.2
	- Small bug fixes in the interface
- Version 3.6.3
	- Small bug fixes in the interface
- Version 3.6.4
	- Small bug fixes in the interface
	- Improved add activity dialog
- Version 3.6.5
	- The days, hours and add activity dialog are now resizeable
- Version 3.6.6
	- Saving of the timetable in xml format is now improved
- Version 3.6.7
	- Small bug fixes in the add activity dialog
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Versions 3.7.0 - 3.7.2 - liviu@lalescu.ro
- Version 3.7.0
	- Added the number of students for each students set
	- The basic space constraints now include the requirement that each room's capacity
	must be greater or equal to the number of participating students
- Version 3.7.1
	- Small bug fixes
- Version 3.7.2
	- ConstraintTeacherMaxDaysPerWeek
	- small bug fix in the interface (when adding ConstraintStudentsSetIntervalMaxDaysPerWeek,
	the maximum number of days of the spin box is now updated correctly)
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Versions 3.8.0 - 3.8.5 - liviu@lalescu.ro
- Version 3.8.0
	- Added equipments list
	- Added ConstraintSubjectRequiresEquipment
	- Small bug fixes
- Version 3.8.1
	- Small bug fixes in the interface
- Version 3.8.2
	- Bug fix when reading ConstraintRoomNotAvailable (thanks to Jerome Durand)
- Version 3.8.3
	- Doxygen options bug corrected
	- Got rid of some compiler warnings
- Version 3.8.4
	- Bug fix: Timetable->Allocate rooms->Start/Continue - crushed FET if there was no
	previous Initialization (thanks to Marek Jaszuk)
	- "Time constraint teacher max days per week broken for teacher:
	XY.This increases the conflicts factor with 0" (thanks to Marek Jaszuk)
- Version 3.8.5
	- Bug fix - when restoring the internal state (time or space), without previously saving
	the internal state, FET crushed (thanks to Marek Jaszuk)
	- Improved translation
	- Now you can write the timetable after initialization or loading the internal state,
	without starting the simulation
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Versions 3.9.0 - 3.9.23 - liviu@lalescu.ro, French translation by Jerome Durand (fetfr@free.fr),
	2 conversion scripts by Jerome Durand and Vimal Joseph.
- Version 3.9.0
	- Bug fix - medium fitness now is shown correctly (no more negative values). Reported
	by Marek Jaszuk.
	- Added a file in the "doc/" directory, explaining how to add/improve translations.
	- Added Constraint2ActivitiesConsecutive (suggested by Ramanathan Srinivasan).
	- Added Constraint2ActivitiesGrouped (suggested by Ramanathan Srinivasan).
	- Added ConstraintActivitiesPreferredTimes (suggested by Vimal Joseph).
	- Modified a bit the organization of translations.
	- Added French translation (by Jerome Durand).
	- Bug fix in ConstraintSubjectRequiresEquipments (non-compulsory constraints
	were considered compulsory).
- Version 3.9.1
	- Small improvement in translations.
	- Small improvement in Help/About form.
	- Added 2 scripts in the "results/" directory to convert the xml results (Jerome Durand, Vimal Joseph).
- Version 3.9.2
	- ConstraintActivitiesSameStartingTime is now separate (in TimeConstraints2) and improved,
	that is you can schedule activities in similar blocks (suggested by Ian Fantom).
	- Small interface improvements.
- Version 3.9.3
	- Bug fix in the add constraint activities same starting time dialog - reported by Ian Fantom
- Version 3.9.4
	- In the add activity dialog, added 3 check boxes so that the user can select only years,
	groups, subgroups or a combination of these.
- Version 3.9.5
	- Improvement of the Help/About form.
- Version 3.9.6
	- Improved the Romanian translation and "Timetable/Export" menu.
- Version 3.9.7
	- Bug corrected - the program now saves correctly the compulsory argument when working
	in another language (suggested by Cristian Gherman).
- Version 3.9.8
	- The possibility to add more teachers pe activity (6), by working on the .xml file
	(suggested by Cristian Gherman).
	- Got rid of old compatibility loading (file rules_compatibility.cpp).
- Version 3.9.9
	- Got rid of some "unused variable" compiler warnings.
	- Modified a bit the README file.
- Version 3.9.10
	- When exiting, the program asks to save the current file (suggested by Nicholas Robinson)
	- Added ConstraintTeacherRequiresRoom (suggested by Nicholas Robinson).
- Version 3.9.11
	- Improved Romanian translation
- Version 3.9.12
- Version 3.9.13
	- Now the fet.ini file is written in the home directory
- Version 3.9.14
	- Small bug fix when writing the default ini file
- Version 3.9.15
	- Small bug fix when writing the default ini file
	- Small bug fix in the conflicts reporting section
- Version 3.9.16
	- When viewing the timetable for teachers, shows also the subjects
	(suggested by Nicholas Robinson).
- Version 3.9.17
	- small doc/FAQ and TODO files modifications.
	- small interface improvements.
- Version 3.9.18
	- now the program compiles in Microsoft Windows without any change (just add a
	#define WIN32 in the file "src/engine/genetictimetable_defs.h").
	- when reading activities with invalid subject, teacher or students, the program does not
	crash anymore (thanks to Morten Piil).
- Version 3.9.19
	- FET now can deal with translations installed in /usr/share/fet/translations/
	 (suggested by Radu Spineanu).
- Version 3.9.20
	- Moved the directory "results" to "~/.fet/results"
- Version 3.9.21
	- The conflicts are now saved in a file ("time_conflicts.txt" and 
	 "space_conflicts.txt") - suggested by Sebastian Canagaratna.
	- Now, saving the internal state works correctly in Debian - reported by
	Sebastian Canagaratna.
- Version 3.9.22
	- The internal state and the exported timetables are now saved in files named after the 
	.xml input file, to allow multiple simulations (suggested by Sebastian Canagaratna).
	- Saving now the timetable in .xml and .html models (suggested by Cristian Gherman).
- Version 3.9.23
	- The user can view the timetable (and saving to html works) for students and teachers
	showing also the rooms (suggested by Sebastian Canagaratna).
	- The space allocation is somewhat faster, by getting rid of the logging part and an 
	unnecessary sorting.
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Versions 3.10.0 - 3.10.5 - liviu@lalescu.ro
- Version 3.10.0
	- Added ConstraintMinimizeNumberOfRoomsForStudents (suggested by Sebastian Canagaratna)
- Version 3.10.1
	- Bug fix - ConstraintMinimizeNumberOfRoomsForStudents is now showed correctly.
	- Small bug-fixes.
	- Improvements in the interface.
- Version 3.10.2
	- Improvements in space allocation (now compulsory ConstraintTeacherRequiresRoom 
	works by repairing)
	- Added ConstraintActivityPreferredRoom (suggested by Sebastian Canagaratna)
- Version 3.10.3
	- Improvements in the interface (the user can now modify the information about
	the students).
- Version 3.10.4
	- Improvements in the interface (the user can now modify the information about
	the activities).
- Version 3.10.5
	- Small bug fix in the interface
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Versions 3.11.0 - 3.11.6 - liviu@lalescu.ro
- Version 3.11.0
	- Improved the interface - Data / time constraints
- Version 3.11.1
	- Improved the interface (bug fix, improvements)
- Version 3.11.2
	- Bug fixes
- Version 3.11.3
	- Improvements in the interface (edit equipments, rooms)
	- Bug fixes (space constraints)
- Version 3.11.4
	- Bug fixes (basic time & space constraints can now be non-compulsory)
	- Improved the interface (space constraints)
- Version 3.11.5
	- Bug-fixes
- Version 3.11.6
	- Improved Romanian translation
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Versions 3.12.0 - 3.12.x - liviu@lalescu.ro, French translation by Jerome Durand (fetfr@free.fr),
	Catalan translation by Miguel Gea Milvaques.
- Version 3.12.0
	- The user now has the possibility to choose only one phase allocation 
	(for difficult space constraints)
- Version 3.12.1
	- Improvements in the interface
- Version 3.12.2
	- Bug fixes
- Version 3.12.3
	- Bug fixes
	- Added ConstraintActivitiesSameStartingHour (suggested by Sebastian Canagaratna)
- Version 3.12.4
	- Added a field named "subject tag" (suggested by Abdul Hadi Kamel)
- Version 3.12.5
	- Bug fixes
- Version 3.12.6
	- Small bug fixes in the interface
- Version 3.12.7
	- Small improvements in the interface
- Version 3.12.8
	- Improved Romanian translation (bug reported by Cristian Gherman)
- Version 3.12.9
	- Modified the Help/About and Help/FAQ forms
- Version 3.12.10
	- Small improvement in the Help/About form
- Version 3.12.11
	- Small improvement in the Help/About form
	- Bug fixes (subject tags)
- Version 3.12.12
	- Small improvement in the Help/FAQ form
- Version 3.12.13
	- Bug fix (constraint subject requires equipments now works correctly)
	- Bug fix (reading activities)
- Version 3.12.14
	- Modified the constraint subject requires equipments
	- Added ConstraintSubjectSubjectTagRequiresEquipments
- Version 3.12.15
	- Small bug fixes in the interface
- Version 3.12.16
	- Small bug fixes in the interface
- Version 3.12.17
	- Improved the Help/About form (included the sponsors tab)
	- Added a file named SPONSORS
	- Modified the file format (*.fet, and added a <!DOCTYPE FET> tag and so on)
	- Added the institution name and comments
- Version 3.12.18
	- Small bug fix
- Version 3.12.19
	- Small improvements in the interface
- Version 3.12.20
	- Small improvements and bug-fixes
- Version 3.12.21
	- Small improvements
	- The language is now saved in the configuration file
- Version 3.12.22
	- Small improvements
- Version 3.12.23
	- Small improvement in the Romanian translation
	- Updated the French translation (Jerome Durand)
- Version 3.12.24
	- Small update in the FAQ
- Version 3.12.25
	- The teachers' timetable now contains a subject tag
	- Bug fix - when the time constraints are invalid, the user is presented the problem 
		- reported by Sebastian Canagaratna
- Version 3.12.26
	- Small improvement in the interface
- Version 3.12.27
	- Small improvement in the interface
- Version 3.12.28
	- Small bug fix when renaming a year or group (reported by Hadi Kamel)
	- Bug fix when erasing activities
- Version 3.12.29
	- Small bug-fixes
	- Added ConstraintActivitiesSameRoom and ConstraintActivityPreferredRooms (suggested
		by Sebastian Canagaratna)
- Version 3.12.30
	- Added Catalan translation (thanks to Miguel Gea Milvaques)