Improvements (from CHANGELOG.md)

• The client options (variables, context, etc.) used for mutation calls are now available as the second argument to the onCompleted and onError callback functions.
  @MrDoomBringer in #10052

What's Changed

• adds a prettier ignore file by @jpvajda in #9809
• Fix documentation code snippets for SubscriptionClient by @jpikora in #9820
• Add a new maintainer (Yours Truly) to README by @MrDoomBringer in #9863
• Remove Ignoring errors sections in link and error handling docs. by @alessbell in #9854
• Update the getting started guide to use the FlyBy API by @rkoron007 in #9851
• Mockprovider docs updates by @jpvajda in #9867
• Updates testing docs to use Testing Library by @alessbell in #9888
• Clarify that id is optional on queries in cache.modify documentation by @MrDoomBringer in #9894
• Add defensive isMounted checks before setting state via useMutation Hook by @alessbell in #9883
• Add onQueryUpdate missing parameters by @capucho in #9898
• Type policy inheritance by @jpvajda in #9905
• Use reactive var hook by @jpvajda in #9906
• Remove jest-fetch-mock in favor of fetch-mock, update tests by @alessbell in #9928
• Minor edits to new useReactiveVar reference by @StephenBarlow in #9932
• Add the new CodeSandbox link by @rkoron007 in #9945
• Pin TypeDoc version in Netlify command by @trevorblades in #9950
• Fix TypeDoc generated file paths by @trevorblades in #9951
• Quick doc change to clarify subscriptions don't work in client schema by @MrDoomBringer in #9944
• Run React 17 + 18 tests on CI by @alessbell in #9942
• Roadmap update by @jpvajda in #9966
• chore: update renovate config and add .npmrc by @alessbell in #9967
• chore: update CONTRIBUTING.md by @alessbell in #9953
• Field policy merge docs by @jpvajda in #9969
• add link to solid.js github repo by @jpvajda in #9981
• Replace crypto-hash with a custom hashing function in tests by @hwillson in #9986
• adds broadcast false details by @jpvajda in #9978
• Use function declaration for WithApolloClient example by @charpeni in #9977
• docs: Update code block meta strings to make syntax highlighting work again by @trevorblades in #9985
• Fix updateQuery docs having incorrect function signature by @MrDoomBringer in #10002
• Correct error handling example in docs by @MrDoomBringer in #9996
• updates roadmap by @jpvajda in #10013
• adds solid.js to integrations.md by @jpvajda in #10014
• docs: fix React default import by @henryqdineen in #10036
• docs: remove errant duplicated text by @henryqdineen in #10046
• updates local resolver warning by @jpvajda in #10062
• GitHub Workflows security hardening by @sashashura in #10049
• Pass mutation options to handlers by @MrDoomBringer in #10052
• MissingFieldError once again extends Error by @MrDoomBringer in #10051
• Fix typos by @CompuWiser in #10045
• Documentation update for ApolloQueryResult by @MrDoomBringer in #10055
• docs: Update "Using Apollo with TypeScript" with a description of fetchMore and subscribeToMore by @bignimbus in #10066
• fix: make react-dom an optional peer dependency by @brillout in #9933
• adds defer docs by @jpvajda in #10079
• updates defer message by @jpvajda in #10088
• Make it clear that @defer is available by installing beta by @hwillson in #10096
• Better error message when failing to match mock variables by @zinkkrysty in #9921
• Export Modifier and Modifiers by @olyop in #8973
• chore(docs): add useFragment_experimental documentation by @alessbell in #10099
• Bump up timeout time for batchLink, query and polling tests by @MrDoomBringer in #10097
• remove obsolete displayName query option by @henryqdineen in #10044
• docs: fixup onResetStore docs, convert to hooks by @henryqdineen in #10047
• changes beta to next by @jpvajda in #10119
• local-state-management AC2 LocalState side note by @MrDoomBringer in #10112
• Fix for ServerError obscured by ServerParseError by @dillontiner in #9997
• Remove conditional require()s from SSR by @MrDoomBringer in #9975
• chore(docs): use optional chaining rather than non-null assertion by @charpeni in #10129
• chore(tests): use node v16.10.0 for jest tests due to memory leaks in 16.11+ by @alessbell in #10140
• docs: Fix typo by @Javokhir12 in #10128

New Contributors

• @jpikora made their first contribution in #9820
• @capucho made their first contribution in #9898
• @charpeni made their first contribution in #9977
• @sashashura made their first contribution in #10049
• @CompuWiser made their first contribution in #10045
• @bignimbus made their first contribution in #10066
• @brillout made their first contribution in #9933
• @zinkkrysty made their first contribution in #9921
• @olyop made their first contribution in #8973
• @dillontiner made their first contribution in #9997
• @Javokhir12 made their first contribution in #10128

Full Changelog: v3.6.9...v.3.6.10