#8849 feat: docs, tests and fixes for create/update/deleteRecord builders (@Baltazore)
#8824 feat: relationshipRollback, serializePatch (@runspired)
#8798 feat: implement a simple LifetimeService utility, improve document reconstruction (@runspired)
#8741 feat: JSON:API serialization utils (@runspired)
#8740 feat: saveRecord builders (@runspired)
#8744 add sortQueryParams, update roadmap with link to checklist (@runspired)
#8716 feat: filterEmpty for query params (@runspired)
#8687 feat: findRecord and query request builders (@runspired)
#8673 DX: Nicer backtracking errors (@runspired)
#8736 chore: refactor IdentityCache to make resource more opaque (@runspired)

#8876 fix: Fetch handler should account for empty body (@runspired)
#8842 fix: handle Immutable Response objects (@runspired)
#8828 fix: set headers after setResponse in Fetch handler (@runspired)
#8850 Overwrite addMixin (@patricklx)
#8831 fix: cleanup build deps and add @ember/string to REST/ActiveRecord builder peer-deps (@runspired)
#8826 fix createRecord error when no adapter is present (@runspired)
#8791 fix: clear relationships properly when unloading new records (@Windvis)
#8794 Fix check for new records in JSONAPISerializer.serializeHasMany (@dagroe)
#8751 Forward fixes from 3.12.x into main (@jrjohnson)
#8684 fix: unloadAll(void) should not destroy the notification manager (@runspired)

adapter, model, private-build-infra, serializer
- #8797 Drop support for ember-cli-mocha and ember-mocha when generating test blueprints (@bertdeblock)

#8848 feat: add request options documentation parts to find-record builder (@Baltazore)
#8825 feat: more docs for builders (@runspired)
#8819 fix: JSONAPISerializer.shouldSerializeHasMany relation param type (@samridhivig)
#8746 docs: more documentation for builders (@runspired)
#8745 chore: readme overviews for builders (@runspired)
#8724 chore: rename CacheStoreWrapper => CacheCapabilitiesManager to reflect its role (@runspired)
#8671 Typo correction in ROADMAP.md (@wagenet)

#8878 test: add basic test for Fetch handler (@runspired)
#8849 feat: docs, tests and fixes for create/update/deleteRecord builders (@Baltazore)
#8868 Add tests for filter-empty request util (@Baltazore)
#8866 Add tests for parse-cache-control (@Baltazore)
#8864 test: confirm records unload properly for #8863 (@runspired)
#8780 chore: add test to demonstrate create props work as expected (@runspired)

#8758 chore: refactor implicit edge to match resource and collection pattern (@runspired)
#8755 chore: simplify file structure in graph package (@runspired)
#8749 fix: ensure we are not allowing embroider to do anything (@runspired)
#8672 chore: update roadmap for 5.3 (@runspired)
#8670 chore: add ROADMAP and update CONTRIBUTING (@runspired)
#8739 chore: migrate store/graph to strict types config (@runspired)
#8733 chore: improve types and lint (@runspired)
#8727 chore: fix peers and get perf-test-app running again (@runspired)
#8717 Switch from local and @types/ember types to ember-source types (@BradBarnich)
#8499 chore: refactor model hook support to live in the model package (@runspired)
#8862 chore: remove more runloop usage | completely remove rsvp (@runspired)
#8861 chore: remove runloop usage (@runspired)
#8859 chore: update target labels (@runspired)
#8858 chore: update required labels (@runspired)
#8830 chore: cleanup actions/setup usage (@runspired)
#8812 fix typo (@samridhivig)
#8802 chore: fix fastboot-testing deprecation (@runspired)
#8801 chore: resolve deprecation in fastboot app (@runspired)
#8860 chore: burn down runloop and RSVP usage (@runspired)
#8832 chore: add recommended JSON:API setup test app (@runspired)
#8829 chore: eliminate dead build code (@runspired)
#8823 fix: graph instantiation should not be required (@runspired)