Bump version to 0.8.5

CHANGELOG.md

 # Change Log
 
-## [Unreleased]
+## [0.8.5] - 2018-04-19
 
 ### Fixed
 
@@ -263,7 +263,8 @@ Initial release
 
 
 
-[Unreleased]: https://github.com/sdispater/poetry/compare/0.8.4...master
+[Unreleased]: https://github.com/sdispater/poetry/compare/0.8.5...master
+[0.8.5]: https://github.com/sdispater/poetry/releases/tag/0.8.5
 [0.8.4]: https://github.com/sdispater/poetry/releases/tag/0.8.4
 [0.8.3]: https://github.com/sdispater/poetry/releases/tag/0.8.3
 [0.8.2]: https://github.com/sdispater/poetry/releases/tag/0.8.2

poetry/__version__.py

-__version__ = '0.8.5a0'
+__version__ = '0.8.5'

pyproject.toml

 [tool.poetry]
 name = "poetry"
-version = "0.8.5a0"
+version = "0.8.5"
 description = "Python dependency management and packaging made easy."
 authors = [
     "Sébastien Eustace <sebastien@eustace.io>"