Merge pull request #827 from emmanuel-keller/1.5

Workaround on #826.
Merge pull request #833 from emmanuel-keller/1.5

Fix #832
Merge pull request #837 from emmanuel-keller/1.5

Fix #836
Merge pull request #841 from emmanuel-keller/1.5

Fix #840. Downgrade HTMLCleaner to 2.7
Merge pull request #846 from emmanuel-keller/1.5

Better redirection handling, auto adress discovery
[maven-release-plugin] prepare release v1.5.6
[maven-release-plugin] prepare for next development iteration