Bugfix release

• ErlyDTL updated, put attention to auto_escape =true by default, fro more info see separate release notes for ErlyDTL 0.9.0 here https://github.com/erlydtl/erlydtl/releases/tag/0.9.0
• a lot of improvements to testing suite (by @zkessin)
• more refactoring (by @zkessin)

number of great patches from our community