Fix a bug that import incorrect "non collision group" information from pmx file.
but, this is not a complete fix.
Fix the limits of rigid body constraints.
Add a feature of importing spring settings of pmx file.
Fix a bug #10 that was assigning interpolation data to incorrect frames reported by iRi-E.
Merge branch 'master' into rigids_and_joints
Change "hide rigid body and joints" option to hide joints for spring dynamics.
Add "ignore non collision groups" option.
Update README.md
Improve speed of importing rigid bodies.
Add a "distance of ignore collisions" option.
Update README.md
Update README.md
Change the name of Empty objects which control the camera and the light of MMD.
Fix incorrect dynamics of pmx model imported with the scale option.
Update README and CHANGELOG.
Add a feature of importing additional rotation and location of bones from a pmx file.
Add support for the influence value of the additional transforms of bones.
Fix incorrect motions of the bones imported with additional transforms from pmx files.
Add a feature of importing a local axis of bones from a pmx file.
Update CHANGELOG