Merge pull request #113 from blazf/TStr

T str
...
merged
operator[]
...
mutable methods
Merge pull request #115 from blazf/TStr

T str
Merge branch 'TStr' of https://github.com/qminer/qminer into TStr

Conflicts:
	src/glib/base/dt.cpp
	src/glib/base/dt.h
Merge pull request #116 from rupnikj/TStr

T str
...
Merge branch 'TStr' of https://github.com/qminer/qminer into TStr
fix
Merge pull request #119 from blazf/TStr

Reverting parts of API, removed some dangerous constructors and operator= in TStr.
Merge pull request #118 from lstopar/TStr

T str
Added Makefile for running C++ tests (test/cpp/*).
Added test binary to ignore list.