Merge branch 'release/2.0.1b' into develop

* release/2.0.1b:
  Update filesums
Rename class to Deferrer
Update README
Fix spelling
Fix documentation
Update file sums for release
Merge branch 'release/2.0.1c'

* release/2.0.1c:
  Update file sums for release
  Fix documentation
  Fix spelling
  Update README
  Rename class to Deferrer