Youtube demo: https://youtu.be/r0Hpu16PN7o
Blenderartists thread: https://blenderartists.org/t/align-selection-to-grease-pencil-2-80/605909
Changelog:
1.2.1: Fixes for 2.80. Moved to github.
1.2.0: Updated for 2.80 API changes. Separated code so individual hotkeys can be assigned for vertices, edit mode bones, curves, uvs, etc.
1.0.8: Removed buggy pose mode support. Fixed support for "Scene" type grease pencil strokes. Some optimizations.
1.0.7: Added hotkey, fixed bugs in poll function
1.0.6: Basic support for UVs
1.0.5: Better proportional editing (but still buggy), pose bones, curves
1.0.2: Code cleanup, basic support for bones, objects and proportional editing
1.0.1: Fixed error caused by not importing view3d_utils
1.0.0: Addon released. Can align vertices to gpencil stroke.