Merge pull request #108 from ostepu/version_0.2

Version 0.2 II
Merge pull request #109 from ostepu/version_0.2

Version 0.2 III
Merge pull request #110 from ostepu/version_0.2

Version 0.2 III
Merge pull request #111 from ostepu/version_0.2

Version 0.2.5
Merge pull request #112 from ostepu/version_0.2

Version 0.2.5.1
Merge pull request #119 from ostepu/version_0.2

Version 0.2.6
gitignore updated
Merge branch 'master' into version_0.2