[maven-release-plugin] copy for tag overlock-scala_2.9.1-0.8.6

[maven-release-plugin] copy for tag overlock-scala_2.9.1-0.8.5

[maven-release-plugin] copy for tag overlock-scala_2.9.1-0.8.4

[maven-release-plugin] copy for tag overlock-scala_2.9.1-0.8.3

Bump to 0.8.1

Bump version to 0.8

put 0.5 in readme bamp