Fix a wrong name of MMDAlphaShader group.
Integrate "To cycles" into the "View" item of MMD Tools Panel.
Update CHANGELOG.md
Add the "is_mmd_rigid_track_target" property.
Add a feature which groups objects imported from a pmx file.
Add support for separated ik target bones.
Fix the bug which causes invalid shading mode.
Remove the "Shadeless" checkbox from the MMD Tools panel.
Update README.md and CHANGELOG.md
Update README.md
Refactor code.
Add a feature of exporting vertex weights.
Change to export texture paths as relative paths.
Change to ignore shadow bones.