- Changed and improved Timer interface
- several new member functions
- reset() -> restart() renaming
- TimeReport: a Timer that prints a report on destruction.
- counter.h: a tool to measure the number of streps of algorithms.
- New documentation module for time measuring and counting.

 /// The namespace of LEMON

 /// \todo Some more detailed description would be nice here.

 ///

 namespace lemon {

   /// The namespace of LEMON concepts and concept checking classes

   /// \todo Some more detailed description would be nice here.

   ///

   namespace concept {}

 }