updated pyas object for new header tags, added new functions
created a place for mission times
added function to find all sas files
split up peek() into a plot() and peek() command
added pixel_to_arcsec function to pyas object, also doc string for plot()
bug fixes and added offset function to get offset of pointing to desired target
worked out offsets, target_offset is now correct though not yet rotated
added scripts to analyze PYAS pointing
added notebook file of pointing analysis
Updated pointing to give elevation/azimuth pointing, updated python notebook of analysis
Updated gitignore for mac
Added setup.py so heroespy can now be installed

to do so use pip install -e . inside of HEROES-Telescope directory
Update to pointing analysis notebook
Cleaned up line numbering
added ctl to properties and saving script
Found blank field in date of pyas file, added code to deal with this
Cleaned up time list
Updates to notebook
Added pyasr versus pyasf comparison notebook
Updates to Rear analysis notebook