0.6.5

• Writing 4 pol psrfits 95bd2cd
• Fix for 4 bit psrfits data f1406b4
• Added bandpass subtraction to your_viewer 90aafca
• Added bandpass fitter 90aafca
• Fixing nbits for dada 4fdf9eb
• Returning 4 pols using get_data e111f8d
• Modified selection of individual pol e111f8d
• Added poln_order to pysigproc and header e111f8d
• Handling 4 pol data in Writer a346a3b
• Changed the default number of spectra per subint in your_writer 57cfadd
• Handling AABB pol ec9f39e
• Zero DM subt in Writer e2dcdba
• Fixed telescope mismatch warning 640fb3c
• Added documentation versioning with d68cca6.