Added v. 9.0.0 to CHANGELOG (#128)

* Added v. 9.0.0 to CHANGELOG

Replaced use of deprecated CodeBase with Location (in tests)
Also minor code cleanup in TempFile.cs

Merge pull request #124 from sillsdev/changelog-release-date

Adjusted release date in CHANGELOG.md

Merge pull request #114 from sillsdev/prepare-for-v7.0.0

Added version 7.0.0 in CHANGELOG

Merge pull request #106 from sillsdev/fix/gha

Trigger GHA on tag push

Added version 5.0.0 in CHANGELOG

Version 4.1.0

Version 4.0.3

Released v4.0.2

Released 4.0.1

Version 4.0.0