Changelog

v0.13.x

Adds a scale factor to control sizing of all objects/text
Adds an "auto" option for label offsets from markers
Adds constellation lines to label collision detection
Adds a gid to plotted objects to make exported SVGs easier to work with in external applications (e.g. Inkscape)
Adds Flamsteed numbers to stars
Adds all star names from IAU
Adds the standard symbol for planetary nebulae
Adds a border size/color property to label styles
Bundles fonts: Inter & GFS Didot

Adds Shapely geometry to all sky object models, including support for intersects in where clauses
Adds kwarg to map plots to allow custom clip paths
Adds callables for star/dso labels
Adds a line function for plotting lines
Adds the standard marker for globular clusters (circle with a cross) and double stars
Adds an ellipse marker for galaxies
Adds colors for some DSO labels that were missing them in some style extensions
Removed the kwarg types from dsos, so ALL DSO types are plotted by default
[v0.12.1] Fixes issue with plotting the Milky Way when it consists of multiple polygons
[v0.12.2] Allows tuples for line styles on polygons and adds geometry kwarg to polygon function
[v0.12.3] Fixes bug with constellation names
[v0.12.4] Makes labels on markers default to None
[v0.12.5]
- Fixes bug with a few constellation ids
- Fixes bug with zenith() function on map plots

Replaces Tycho-1 stars with an abridged version of the Big Sky Catalog
Adds style option for a star's edge color (previously this was forced to be the background color)
Adds cardinal direction labels to the horizon plotting function
Removes behavior that automatically plots the cardinal direction border on zenith plots
Adds function for plotting the zenith
Adds support for downloading the full Big Sky Catalog (2.5+ million stars)
Various (minor) plotting optimizations
Increases star sizes on map plots
Adds TYC id to stars (if available)
Adds the following projections: Robinson, Lambert Azimuthal Equal-Area
Adds a constellation model, allowing you to selectively plot objects by their constellation
[v0.11.1] Fixes default horizon style to be consistent with grayscale extension
[v0.11.2] Adds requests as a required dependency
[v0.11.3] Fixes bug with plotting the celestial equator
[v0.11.4] Fixes bug with filtering DSOs by NGC/IC identifier

Adds function for plotting text
Adds where kwarg to star/DSO plotting functions to selectively plot stars
Adds easier way to override style properties on plotting functions - thanks to Graham Schmidt
Adds function to plot the Sun - thanks to Graham Schmidt
Adds option to illustrate the Moon's phase - thanks to Graham Schmidt
Adds objects property to plots, which stores lists of objects that have been plotted
Adds object finder helpers
Adds customizable anchor points for text labels
Adds Pluto as a planet :)
Fixes clipping issues with polygons
Fixes a few issues with gridlines
[v0.10.1]
- Fixes bug with plotting planets as true apparent size
- Adds lat/lon kwargs to Sun/Moon/Planet models to allow apparent RA/DEC calculation
[v0.10.2] Fixes a few issues with plotting legends

Added perspective projections (Orthographic, Stereographic) to map plots - many thanks to @bathoorn
Zenith plots are now a type of projection for map plots, to support plotting the Milky Way, constellation borders and more - many thanks to @bathoorn
Removed the visible style property and instead now you control what is plotted by calling functions on the plot (e.g. p.stars(mag=8)) to be more consistent with other plotting frameworks and allow more control over what's plotted and how. For example, now you can do things like plotting very bright stars with a different marker (and sizes, etc) than dimmer stars.
Optional callables for calculating star size/alpha/color when plotting stars
Nebula outlines! via OpenNGC
Stars are now plotted in order of their calculated size, which prevents "bigger" stars from hiding "smaller" stars
Added more marker symbols and style extensions
[v0.9.1] Fixes bug with plotting moon and planets as their true size

Adds new Milky Way outline created from a NASA image, and broken into sections to speed up plotting/exporting
Adds styling support for more DSO types
Adds support for Mollweide projection
Fixes map and optic plots to handle wrapping of RA (e.g. plotting RA extent from 2h -> 18h)
Fixes a bug in all plots that prevented some star styles to not get applied
[v0.8.1] Fixes a small bug in adjusting RA extent on map plots
[v0.8.2] Fixes a small bug in determining if a RA/DEC is in bounds of a plot
[v0.8.3] More consistent polygon/circle sizing across projections
[v0.8.4] Fixes a small bug in plotting text labels of DSOs, which prevented some styles from getting applied