Release version 7.4.8

Release version 7.4.7

Update changelog for v7.4.6

Update changelog for v7.4.5

Merge pull request #68 from eman/7.3.4-release

Release v7.3.4 - Fix Temperature Delta Conversions

Merge pull request #67 from eman/copilot/update-changelog-for-release

Release v7.3.3: Unit-system agnostic temperature operations

Update changelog for v7.3.2

Release version 7.3.1

Update changelog for v7.2.3 release

Merge pull request #57 from eman/fix/tou-status-always-false

Fix TOU status always showing False