Version 4.2 (#586)

* rel : migrate to version 4.2

* rel : CHANGELOG.md updated

* rel : document updated

Version 4.1 (#563)

* rel : migrate to version 4.1

* rel : CHANGELOG.md updated for version 4.1

* rel : document updated for version 4.1

* doc : minor edit in feature_request.yml

* doc : minor edit in Document.ipynb installation section

* doc : DigitalOcean logo added to README.md

Version 4.0 (#508)

* rel : migrate to version 4.0

* doc : doc run for version 4.0

* fix : setup.cfg removed

Version 3.9 (#501)

* rel : migrate to version 3.9

* doc : doc run for version 3.9

* fix : notebook check test bug fixed

Merge pull request #481 from sepandhaghighi/dev

Version 3.8

Merge pull request #470 from sepandhaghighi/dev

Version 3.7

Merge pull request #447 from sepandhaghighi/dev

Version 3.6

Merge pull request #434 from sepandhaghighi/dev

Version 3.5

Merge pull request #420 from sepandhaghighi/dev

Version 3.4

Merge pull request #395 from sepandhaghighi/dev

Version 3.3