Phot2lc

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> Removed some extraneous print commands.
> Changed the light curve and photometry header
descriptions for DATE, UTC, MJD, and BJED to be
more descriptive.
> Finally got the weldlc functions working again with
the new .lc output formats. wildly can be used now
to stitch .lc files together for multi-night or
multi-site data sets.

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> Made phot2lc into a python package available on PyPI
> Fixed bugs so that phot2lc and photconfig work
properly once they have been pip installed

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> Added a sigma clipping function. This feature can
be used with the "x" key. User will be prompted
for their choice of lower and upper sigma
rejection thresholds. The user can also choose
the window size, i.e. how many points are
considered at a time when rejecting data points.
Smaller windows are useful when dealing with
stars that are variable on short timescales. The
default window size is 25 data points.
> Changed periodogram calculation/plot so that it
only goes out to 10,000 uHz, for easier viewing.
> Added "!/usr/bin/env python" to script so it can
be executed on the command line without having
to invoke Python beforehand.
> Also removed .py extension on phot2lc so it looks
more like a regular executable.
> Removed version history from phot2lc script, it now
lives only in this text file.
> Cleaned up the inputs. Deleted some unused modules
and reorganized the rest. Now checks to make sure
the python version is 3.6 or later.
> Added a new configuration script, a convenience
function which new users can use to set the
defaults. This was needed in order to prevent
users from having to go into the code and manually
change hard-coded variables in order to make
phot2lc work. Now, the "photconfig" function can
be called which edits the config.dat file, which
is then loaded into phot2lc during initialization.

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> Added a new command line input parameter for
providing the object name. Originally the object
name was grabbed solely from the FITS header, but
not all FITS files will have an object entry. The
object name is required, however, for grabbing the
corresping RA and Dec from the star.dat file.
Judi Provencal recommended adding a command line
option. The new command line option is -o, or
--object. By default this option is set to None,
in which case the header is used.
> Changed activation and deactivation functionality
of the Garbage and Zoom rectangle selectors.
Originally, once activated with the "g" or "z"
input keys, they would remain active until
deactivated using the same input keys. This would
lead to some confusion during use, as it was often
easy to forget one selector was activated which
then blocked activation of the other selector.
Now, each selector is automatically deactivated
after use, though it can still be manually
deactivated if, once a user activates it, they
realize they don't want to use it.
> Added a Reverse Garbage Selector which, when you
draw a box, will delete all of the points OUTSIDE
of the box rather than inside the box. This
feature can be activated and deactivated using
the "r" keyboard input.

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> Created a new function in photfunc.py, get_loc,
which gets the Astropy Earth Locations for each
telescope available in the teledat.py file
> Added LCOGT 1.0m telescopes to teledat.py with
codename 'lco1'
> Fixed bug related to object names. If object name
taken from the FITS header has any spaces in it,
those spaces will now be automatically removed,
since the object names in stars.dat cannot have
spaces.
> Removed plot that shows the size of apertures and
sky annuli around each object. Too many issues,
and not a very useful plot.
> Fixed bug in get_time function. Times were being
improperly re-formatted when DATE-OBS was already
in ISO or ISOT in the FITS header. Now, these
times are fed directly into an Astropy Time object
which can auto-interpret the format.

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> Created the teledat.py and photfunc.py scripts
-teledat.py stores information related to each
telescope and has a unique 4-letter code
associated with each one. This script is
similar in purpose to the file whiff.dat
for WQED.
-photfunc.py stores several functions used
within the main script below. This was
created just to help clean things up.
> Included functionality that allows phot2lc
to be used with output from both hsp_nd and
Maestro. For Maestro, only the "counts" files
can currently be used.
> Improved the formatting for the .lc and .phot
output files. The headers are now more easily
readable and contain more information. There
are also two time columns now, one for the raw
uncorrected times, and one for the barycentric
corrected times.