[build] version,minor: '-beta' suffix removed.

 - now removing '-beta' version string suffix while building binaries
   from master branch.
[build] cleanup: do not alter version string this way.

 - instead, rely on the branches separation.
[checkpoints] another checkpoint...
Merge branch 'dev-0.1.3' into release-0.1.3
Merge branch 'release-0.1.3'