Merge pull request #83 from rupnikj/TStr

cleaning, fixing
Merge pull request #85 from rupnikj/TStr

getmemused, and comparator
fix
Merge branch 'TStr' of https://github.com/qminer/qminer into TStr
Merge pull request #86 from rupnikj/TStr

comparator
Merge branch 'TStr' of https://github.com/qminer/qminer into TStr
...
fixed split methods to use the old API
comparison operators
comparison operators...
split methods
Merge branch 'TStr' of https://github.com/lstopar/qminer into TStr