Only require ref/target when setting frame to certain coord sys (#2482)

Update celestia-gaia-stardb submodule (#2481)

Support MSAA in FBO and multiple viewport effects (#2479)

[ci] Update vcpkg version (#2476)

Migrate draw_rectangle_solid to use VertexObject/Buffer classes (#2474)

Updates for file po/celestia.pot in pt_BR (#2473)

Updates for file po/celestia.pot in bg (#2472)

Renamed and rearranged stars files (#2468)

Rerun celtranslate

Rebuild fonts when DPI changes (#2469)

Change "Planetary companion" to "Planetary system" (#2470)

Handle out-of-range catalog numbers in .stc, fix line number counting

Use geometryOrientation in location positioning

[ci] Update vcpkg to pick up libpng 1.6.55

Update default comet tail colour (#2463)