🚧 Switch to 0.7.4.dev0

[jsnel]

Pending the merge of staging which would result in a 0.8.0 releasing, we're switching the main branch back to a dev0 state.

Change summary

• Switch back to dev0 state, add changelog boilerplate.
• Add release date for 0.7.3 release in changelog

Checklist

• [ ] ✔️ Passing the tests (mandatory for all PR's)
• [ ] 🚧 Added changes to changelog (mandatory for all PR's)

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[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.8%. Comparing base (2c88dce) to head (c573437). Report is 26 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1524 +/- ## ======================================= + Coverage 88.6% 88.8% +0.1% ======================================= Files 107 109 +2 Lines 5128 5245 +117 Branches 962 983 +21 ======================================= + Hits 4544 4658 +114 Misses 468 468 - Partials 116 119 +3 ```

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