Update VERSION to 2.2.33 (microsoft#1081)

Adding a sample for identifying PII in a PDF (microsoft#1023)

Updating from 2.2.30 to 2.2.31 (microsoft#973)

version 2.2.30 (microsoft#943)

Update VERSION to 2.2.29 (microsoft#894)

* Update VERSION

* Update CHANGELOG.md

Version 2.2.28 (microsoft#861)

Update version to 2.2.27 (microsoft#843)

Fixed exception on context support in 2.2.25 (microsoft#837)

Update VERSION to 2.2.25 (microsoft#834)

Update VERSION to 2.2.24 (microsoft#820)