<!-- A new module or something else important -->
## Major features
- New `ParticleFields` module. Add particles to your planet (ex: leaves,
rain, snow, fireflies, and more). Resolves#219
<!-- A new parameter added to a module, or API feature -->
## Minor features
-
<!-- Some improvement that requires no action on the part of add-on
creators i.e., improved star graphics -->
## Improvements
-
<!-- Be sure to reference the existing issue if it exists -->
## Bug fixes
-
## Minor features
- `AddPhysics` on `Base` module for planets allows a planet to be pushed
out of orbit. Intended for satellites or small props floating in orbit.
Implements #194
## Bug Fixes
- Fix default system override being unreliable #687
<!-- A new module or something else important -->
## Major features
- New API methods to: Add ship logs from xml, add dialogue from xml,
create a new planet from json string. All of these methods work directly
with strings or XElements and don't load files on their own.
<!-- A new parameter added to a module, or API feature -->
## Minor features
-
<!-- Some improvement that requires no action on the part of add-on
creators i.e., improved star graphics -->
## Improvements
-
<!-- Be sure to reference the existing issue if it exists -->
## Bug fixes
-
…o solar system
<!-- A new module or something else important -->
## Major features
-
<!-- A new parameter added to a module, or API feature -->
## Minor features
-
<!-- Some improvement that requires no action on the part of add-on
creators i.e., improved star graphics -->
## Improvements
-
<!-- Be sure to reference the existing issue if it exists -->
## Bug fixes
-
