Release notes

The full release notes including an upgrade guide can be found here: https://github.com/graphql-python/graphene/wiki/v3-release-notes

What's Changed

Graphene v3 following v3 graphql-core by @mvanlonden in #1048
Fix typos by @minho42 in #1066
Remove AbstractType by @jkimbo in #1053
Propagate arguments of relay.NodeField to Field by @tdiam in #1036
Fix typo in execute.rst by @TheMelter in #1115
Increase the allowed version of aniso8601 by @ymoch in #1072
Update quickstart.rst by @ibhlool7 in #1090
Add file uploading docs by @jkimbo in #1084
Fix objecttypes DefaultResolver example (#1087) by @tompao in #1088
Fix tests by @jkimbo in #1119
Fix example code by @jkimbo in #1120
Update readme by @jkimbo in #1130
Use unidecode to handle unicode characters in constant names by @henrythor in #1080
The default_value of InputField should be INVALID by @ganwell in #1111
Add a helpful message to when a global_id fails to parse. by @allen-munsch in #1074
fix example middleware class in docs by @dsanders11 in #1134
fix typo in class 'Interface' by @JMmmmuu in #1135
Fix example query in quickstart doc by @ko-lem in #1139
Fixed import causing Graphene v3 to crash by @jaydenwindle in #1143
Replace INVALID with Undefined by @jkimbo in #1146
Added support for subscription by @rob-blackbourn in #1107
Remove subclass polyfill by @syrusakbary in #1156
Updated all str.format(…) to f-strings by @syrusakbary in #1158
Fixed examples, make root object explicit inside resolvers and mutate by @hzlmn in #1159
Remove unused function by @jkimbo in #1160
Add some more tests for Interface by @jkimbo in #1154
Use default_resolver to resolve values when using the source attribute by @jkimbo in #1155
Add note about the use of args by @jkimbo in #1170
Docs: integrations: fix FastAPI link by @sduthil in #1177
Fix resolve method parameters bullet list by @rrueth in #1178
Allow fast ObjectType creation based on dataclasses by @syrusakbary in #1157
added graphene import to READMEs by @kimbo in #1183
Update excluded packages list to properly exclude examples package by @radekwlsk in #1187
Fix typos by @kevinharvey in #1192
Fix issue with trailing whitespace by @jkimbo in #1197
Fix typo in quickstart document by @dbgb in #1201
Fix DateTime Scalar parse_literal methods (#1199) by @Cito in #1200
Remove @staticmethod decorator in mutations doc by @jkimbo in #1206
Remove to_const function by @jkimbo in #1212
Update requirement for Query type in mutation docs by @jkimbo in #1213
Rename variables called type to type_ by @DoctorJohn in #1216
Set min version of graphql-core to v3.1.1 by @jkimbo in #1215
Revert 1213 update mutation docs by @jkimbo in #1214
ObjectType meta arguments by @jkimbo in #1219
Add Base64 scalar by @EpicEric in #1221
Expose Base64 type and add custom scalar examples by @jkimbo in #1223
Improve enum compatibility by @jkimbo in #1153
Minor grammatical fix in the schema docs by @rednafi in #1237
Subscription revamp by @syrusakbary in #1235
Split out the subscriptions documentation a separate file and fix it by @jkimbo in #1245
Fix subscribe with arguments by @jkimbo in #1251
Fix Typo in Docs by @plopd in #1252
Fix typo in Schema docs by @varundey in #1259
add BigInt type by @pizzapanther in #1261
Syntax Error Fixed for Dictionary assert by @lnxpy in #1267
Add UnforgivingExecutionContext by @AlecRosenbaum in #1255
Remove Object Mutation dead link from Relay docs by @varundey in #1272
fix(Decimal): parse integers as decimal. by @zbyte64 in #1295
Fix links to Relay docs by @bartenra in #1318
Language fixes on index.rst by @shukryzablah in #1313
Use argument's default_value regardless if the input field is required by @minhtule in #1326
fix field name in execute.rst example by @kevinr-electric in #1327
Fix typo in docstring of ObjectType by @sir-sigurd in #1343
Allow later aniso8601 releases by @fabaff in #1331
Update pytz to 2021.1 by @fabaff in #1330
add support for query validation by @aryaniyaps in #1357
Fix actions by @aryaniyaps in #1359
Fix GraphQL-core dependency by @ekampf in #1377
Fix unseen examples by @aryaniyaps in #1376

New Contributors

@minho42 made their first contribution in #1066
@tdiam made their first contribution in #1036
@TheMelter made their first contribution in #1115
@ymoch made their first contribution in #1072
@ibhlool7 made their first contribution in #1090
@tompao made their first contribution in #1088
@henrythor made their first contribution in #1080
@ganwell made their first contribution in #1111
@allen-munsch made their first contribution in #1074
@dsanders11 made their first contribution in #1134
@JMmmmuu made their first contribution in #1135
@ko-lem made their first contribution in #1139
@jaydenwindle made their first contribution in #1143
@rob-blackbourn made their first contribution in #1107
@hzlmn made their first contribution in #1159
@sduthil made their first contribution in #1177
@rrueth made their first contribution in #1178
@kimbo made their first contribution in #1183
@radekwlsk made their first contribution in #1187
@kevinharvey made their first contribution in #1192
@dbgb made their first contribution in #1201
@Cito made their first contribution in #1200
@DoctorJohn made their first contribution in #1216
@EpicEric made their first contribution in https://github.com/graphql-python/graphene...