Gocart

- **ENHANCEMENT**: added a 'significant' filter option to filter on significant = True or False
- **FIXED**: bug in burst filtering

- **FIXED**: fixing parsing issue for initial burst alerts containing image links as property and classification parameters

- **REFACTOR**: making plots consistent across platforms by including a MPL style file
- **FIXED**: area of contours now included in plots if generated from a plugin

- **FEATURE**: added ability to plot square footprints on to the aitoff skymaps
- **ENHANCEMENT**: significance explicitly added to RHS sidebar of maps
- **REFACTOR**: colours of map contours adjusted to pastel colours
- **REFACTOR**: transparency of sun, moon, galactic plane adjusted for greater clarity
- **FIXED**: contours often getting tangled at the poles of the aitoff maps and rendering incorrectly. Solved by 'chunking' the filled contours with matplotlib

- **REFACTOR**: `get_moon` has being depreciated in astropy, moving to get_body("moon")
- **FIXED**: bilby now correctly reported as localisation on RHS of aitoff skymaps
- **FIXED**: fix in prob calculations in flattened maps
- **FIXED**: allowing symlinks in plugin folder

- **ENHANCEMENT**: added a `burst` filtering parameter. If set to True, burst event alerts will pass the filter, otherwise they filtered out (default).
- **REFACTOR**: maps with `CREATOR: ligo-skymap-from-samples` now named on file as `bilby.multiorder.fits`.
- **REFACTOR**: try, except added to listen parser. If an alert breaks the parser an ugly error message is reported, but the listener stays alive to listen to subsequent alerts.
- **FIXED**: burst events causing headaches for filtering and map conversion. The first 'real' burst event provided the necessary alert packet and map to create a realistic unit test for the entire codebase. The code is now much more robust to busrt event alerts.