Adding MAFISC filter

[t20100]

Once JPEG is added (#85), adding BZIP2 and MAFISC would make hdf5plugin embedding all "commonly used Registered Filter Plugins [..] packaged into the HDF5 Plugin software" (see HDF5 Filter Plugins: BZIP2, JPEG, LZF, BLOSC, MAFISC, LZ4, Bitshuffle, and ZFP) except LZF which is already provided by h5py.

[vasole]

For JPEG I would only give the option to build with provided system libraries. I guess it would be something for the users to install if they want.

I do not think we are going to compile the JPEG library nor to supply it with the wheels. Of course I would reconsider if there is a strong demand.

[vasole]

BZip2 already in.