Version 1.18
* Fix crash when nebula definitions can not be loaded
* Log when definitions can not be loaded

Version 1.17
* Increase default density multiplier to 1
* Fix certain shapes not working correctly when far from world origin

Version 1.16
* `/nweathers` is an alias for `/nweatherlist`
* Render optimizations
* Added command `/nshape [Cube, SphereHard, SphereSoft, EllipseX, EllipseY, EllipseZ, DonutX, DonutY, DonutZ]`
* Added command `/nshapes` `/nshapelist` to list available shapes
* Added command `/nshadows` `/nshadowlist` to list available shadow settings
* Default shape of nebula is SphereHard
* Increased limit of `/ndensity` multiplier
* Updated Water API
* Improved density algorithm

Fixed a logging issue

Version 1.15
* Fixed command /nregen not doing anything
* Fixed command /nseed not doing anything
* Fixed rendering being weird

API Version 7 (Minimum 1)
* Added method SetColors to set the colors of the nebula
* Added method GetPrimaryColor to get the primary color of the nebula
* Added method GetSecondaryColor to get the secondary color of the nebula
* Added method RemoveNebula to remove a nebula

Version 1.14
* Nebula does not render if the camera is underwater in the Water Mod
* Added command /nshadow None/Asteroids/Planets/Both to determine whether shadows only draw on planets, asteroids, or both
* Added command /nintensity to set a multiplier that modifies the intensity (noise generator) of the nebula
* Fixed lightning spawning underground/inside asteroids
* Asteroid shadow optimizations
* Fixed planet shadows stacking overtime after reloading saves
* Fixed implicit Vector3 conversions
* Improved physics number precision
* Render optimizations
* Improved comet rendering when the weather ends
* Optimized noise generation
* Fixed planets outside of nebula getting shadows
* Fixed players getting weather alerts globally

API Version 6 (Minimum 1)
* Added method CreateNebula that lets you create a nebula at a position
* Fixed potential crash