v3.0.0

CImGui v3.0.0

Diff since v2.3.0

Merged pull requests:

• Pin the renderloop to thread 1 by default for safety (#138) (@JamesWrigley)
• Add a port of HelpMarker() (#139) (@JamesWrigley)
• Minor docs improvements (#140) (@JamesWrigley)
• v1.91.0 (#141) (@JamesWrigley)
• Delete code obsoleted by improved GLMakie embedding support (#142) (@JamesWrigley)
• Add accessors for ImNodesStyle (#144) (@JamesWrigley)
• Regenerate bindings for v1.91.1 (#145) (@JamesWrigley)
• Prepare for v3 (#147) (@JamesWrigley)