Vetala Beta 0.4.2

[louisVottero]

This release fixes important bugs with the new deform.TransferWeight optimizations

• Fixes for deform.TransferWeight.transfer_joint_to_joint
• deals better with joints that were removed or that have no influence
• fixes a naming issue when finding the joint index on a skin cluster for the api
• lock joints properly when editing the weights. Makes the behavior exactly has it was prior to the optimizations
  
  Other Fixes
• Vetala saves out the naming of meshes with non-unique names in a special way. This release sees that naming imported properly again.
• core.is_parent_hidden now searches full path to avoid non-unique name issues
• Copy Match has some minor exception catching improvements that will hopefully improve it usability.