use platform dependent line separator in multiline test
Maven plugin updates

Strangely, the plugin version checks that we have did not catch those.

See #158 for the originating issue.
New task to check properties updates
Welcome Alexis Thomas as a contributor

Signed-off-by: Julien Ponge <julien.ponge@insa-lyon.fr>
Merge pull request #161 from ath0mas/carriage-return-multiline-test-fail

Use platform dependent line separator in multiline test