combined state/action_value to value, other improvements

upgrade version (pip fix)

updated roadmap and requirements

corrected version

update to version 0.4.3

updated to version 0.4.2

updated to version 0.4.1

updated to version 0.4.0

updating to version 0.3.5.1 (restored compatibility with tensorflow 1…

….4.x)

updated to 0.3.5 after hotfix, updated dependencies to tensorflow 1.5…

….0rc0