misc: version bump 

Merge pull request BrendanParmer#85 from BrendanParmer/v3.0 V3.0

Merge pull request BrendanParmer#57 from BrendanParmer/v2.2 v2.2.0

Merge pull request BrendanParmer#52 from BrendanParmer/NullImageFix fix: image nodes no longer throw errors when no image is selected

Merge pull request BrendanParmer#48 from BrendanParmer/v2.1 V2.1

fix: color ramps with one element now work 

Merge pull request BrendanParmer#39 from BrendanParmer/v2.0 v2.0

Merge pull request BrendanParmer#31 from BrendanParmer/v1.3.0 V1.3.0

fix: curves not updating 

fix: wouldn't properly handle node groups with periods in the name