Update README.md

"Create a new release" is now "Draft a new release"

updating contributions

Version updates for 4.0! (What? Yes! OK, 4.01!)

Download page link updates for 4.0 release

Download page link updates for 4.0 release

Re-order the list for Downloads

Update for 4.0 Beta 9

Update for () around Pi releases

Update for Download page software names

Update for 4.0 Beta 8