Some refactoring and new compcode_to_compname() and compname_to_compcode() made public
Adding the blosc_ prefix to compcode_to_compname() and compname_to_compcode() because they are public
Added possibility to disable support for LZ4, Snappy and Zlib
More API refinements for compcode <-> compname conversions
Updated filter for HDF5 for supporting new compressors
Printing Blosc version in bench with no params
Updated docs a bit
Version bumped to 1.3.0-rc3