BitMagic release v3.8.0

1. Fixed bug of incorrect buffer management on Windows/DLLs when bit-vectros are instantiated and used in different DLLs.
2. Changed buffer management for full blocks.
3. Improved doxygen markup and documentation.
4. Implemented new sparse container for integer types, based on bit-transposition.
   New container offers in-memory compression of non-random data based on bvector<>, dynamic adjustment of bitness, serialization and new algorithms.