Betty 0.3.3

What's Changed

• Ensure localizables are localized before using them as strings by @bartfeenstra in #1360
• Mock servers during tests, so they no longer open browser windows by @bartfeenstra in #1359
• Ensure extensions managed by App are sorted in a stable manner by @bartfeenstra in #1362
• Fix mypy violations by @bartfeenstra in #1364
• Add a cache API by @bartfeenstra in #1310
• Ensure Betty's own deprecation warnings are emitted by @bartfeenstra in #1365
• Fix mypy violations by @bartfeenstra in #1367
• Improve cache fixtures, and introduce one for an App-compatible Cache implementation by @bartfeenstra in #1368
• Add additional package classifiers by @bartfeenstra in #1369
• Make Cache.get() return a context manager by @bartfeenstra in #1371
• Remove dead code by @bartfeenstra in #1375
• Improve a variable name that was no longer accurate by @bartfeenstra in #1376
• Isolate QApplication from tests, and ensure there is only one QApplication instance as per Qt guidelines by @bartfeenstra in #1377
• Fix broken JSON due to HTML escaping by @bartfeenstra in #1384
• npm dependencies (Maps extension)(deps): bump css-loader from 6.11.0 to 7.1.0 in /betty/extension/maps/assets/betty.extension.npm._Npm/src by @dependabot in #1385
• npm dependencies (Trees extension)(deps): bump css-loader from 6.11.0 to 7.1.0 in /betty/extension/trees/assets/betty.extension.npm._Npm/src by @dependabot in #1387
• npm dependencies (Cotton Candy extension)(deps): bump css-loader from 6.11.0 to 7.1.0 in /betty/extension/cotton_candy/assets/betty.extension.npm._Npm/src by @dependabot in #1386
• Rewrite Python dependency constraints to allow for more accurate and granular future compatibility by @bartfeenstra in #1389
• Do not use live caches during tests by @bartfeenstra in #1370
• Reduce memory consumption by adding slots to EntityCollection and subclasses by @bartfeenstra in #1390
• Limit Github Actions test runs to 30 minutes by @bartfeenstra in #1391
• Run sphinx-docs with concurrency by @bartfeenstra in #1392
• Simplify the asyncio API by @bartfeenstra in #1393

Full Changelog: 0.3.2...0.3.3