added methods to LYRA lightcurve object for extracting LYTAF information during timerange of object
updated new lyra lightcurve methods and changed method names.
updated comments in lyra.py file
restructured LYRA utilities to be outside of the lyra lightcurve class.
Make LightCurve._download throw a warning if no dl

This closes issue #524
changed download function to use sunpy.net.download and lengthened variable names for clarity.
added new quantity function to return astropy quantity, all other functions now use this function to get the value or unit, trying to preserve api
update to use Quantity, getting warning from astropy still
Merge pull request #636 from Cadair/0.4_lc_clobber

Make LightCurve._download throw a warning if no dl
fix for issue #623
Pass draw_limb kwargs to patch.Circle
Pass draw_grid kwargs to plot
fixed logical lightcurve example
made sure the measurement in SWAP is truly a string as required
Add full changelog
add changelog for 0.3.2
add more to 0.3.2 changelog
Add patch to #471 to changelog
bump version numbers
created a lyra.py file in sunpy/instr/ and transferred LYTAF routines to there from sunpy/lightcurve/sources/