project/build.properties | 2 1 + 1 - 0 !
1 file changed, 1 insertion(+), 1 deletion(-)

 use latest sbt version
 sbt launcher is used by sbt and we're in the process of building sbt so, let's
 use the sbt that is just before and available.

build.sbt | 4 2 + 2 - 0 !
1 file changed, 2 insertions(+), 2 deletions(-)

 use scala 2.11
 Rely on scala 2.11 which is default in Debian Unstable and use available level
 of library scalatest based on scala 2.11