Qt4 compatibility.
Fix default pattern. Fix default category.
Fix file appender.
Add disabling C++11 code.
Rename build target and .pri file to 'nestorthelogger'.
Remove const qualifier from stream operator of the Logger.
Config reader refactoring.
Fix library name in .pri file.
Add Doxyfile.
Fix QSharedPointers declaration.
Add MemoryAppender.
Add LogAppenders test.
Add LogConfigReader test.
Update AUTHORS
Fix placeholders for compatibility with Qt5. Fix #2
Fix disabling message handler.
Fix default pattern.