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Upgrading
=========
From 0.4 or older
-----------------
- Removal of the class setters, such as `Rack::Timeout.timeout = 5`, may
lead to an error when upgrading. To fix this, remove these setters and
instead use either the [environment variables][config-env],
`RACK_TIMEOUT_*`, or [insert the middleware manually][config-insert]
and configure the middleware as desired when inserting.
[config-env]: README.md#configuring
[config-insert]: README.md#rails-apps-manually
- The Rollbar support was removed; a deprecation warning will be emitted
if you are using this module. The recommendation is to use Rollbar's
custom fingerprinting. A recommendation is provided in
[doc/rollbar.md](doc/rollbar.md).
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