Following extensions kept remain 755:
 - .sh
 - .bash
 - .sample (https://git-scm.com/book/en/v2/Customizing-Git-Git-Hooks)
Following extensions changed into 644:
 - Scripts
   - .json
   - .js
   - .html
   - .mel
 - Resources
   - .3mf
   - .dae
   - .jpg
   - .wrl
 - MISC
   - README.md
   - LICENSE

In the previous commit there were still situations where export
selected would not work properly.

- Fixing Export Selected: Removed most of the calls to ls() which does
a physical select which would really mess up the attempts to Export
Selected. In place I am using listHistory followed by listConnections
which seems to work correctly.
- Updated references to "Diffuse" in maya to be "Color" which is what
was actually being used. Added comments about this to the README.
- Changed code reference of "diffuse" to "color" where it was
appropriate for clarity.
- Added code that keeps it from exporting bones/animations on Export
Selected because it currently doesn't work. Also added Note in the
export dialog to this effect.
- Fixed how opacity was exported. Previously was grabbing the A channel
of the RGB object, but Maya stores transparency in all three RGB
channels. Grabbing R channel for opacity value in JSON.
- Added comment regarding the JSON exporter hack at the bottom of the
file for clarity.
- Turned on Pretty Output by default. I saw no reason not to now that
I've cleaned up the output.
- Removed depreciated arguments from the frameLayout call in MEL. -bs
is no longer supported.
- Moved the bones checkbox and related textfield into the animation
section. Seemed logical.