Merge pull request #5 from mpetris/master

latest features and bugfixes
Merge pull request #6 from mpetris/master

performance tuning tagdef deletion
Merge pull request #7 from mpetris/master

latest features and bugfixes
Merge pull request #8 from mpetris/master

latest features, bugfixes and documentation
Merge pull request #9 from mpetris/master

latest features, bugfixes and documentation
issue #81

in progress
issue #81

fixed
Merge remote-tracking branch 'origin/master' into f81
Merge pull request #97 from catmadevel/f81

F81