Hiku

* c06d05c Merge pull request 172 from evo-company/fix-aliased-record-field
* 3224bb3 update docs 0.8 - describe fix for aliased records
* b52a9da fix aliased record field
* fa2d110 reindent docs (changelogs)

* 59b0f87 Merge pull request 171 from evo-company/update-08-docs
* 418b768 update 0.8.x docs
* 0ea5d9e Merge pull request 170 from evo-company/add-result-to-ExecutionResult
* 778d267 add result field to ExecutionResult

* f9ebe66 fix extensions doc
* fd2e523 Merge pull request 168 from evo-company/fix-docs
* 441252a fix docs all over the place
* b2719ae Merge pull request 167 from evo-company/97-fix-aiopg_and_sqla_compatibility
* 712a307 Run db integration tests on CI
* 93d7555 Fix aiopg + sqlalchemy >= 1.4 compatibility issue
* 38ecdd2 Merge pull request 166 from evo-company/migrate-to-python3.8
* 1a4bebf use builtin ast module as is
* 2c9437f use typing.Protocol
* 63cc321 fix myp and flake8 issues after deps update
* e2179a7 migrate to python3.8
* 9058f0a update pdm.lock file
* a891bd7 Merge pull request 165 from evo-company/164-remove-old-features
* 215656e Update docs that references edn, protobuf
* c62774c Remove code for old features that are not used anymore
* 063f7c9 Merge pull request 155 from evo-company/introduce-schema
* 1fce663 rewrite GrapQLError
* 8d19c91 remove Engine from public Schema api
* 6248cae drop hiku.federation.engine
* e9398b6 rename on_graph to on_init
* cf2d1ef return ExecutionResult from Schema.execute/execute_async
* 059721f Introduce Schema (new high-level api)

* 0e0a921 Merge pull request 174 from evo-company/fix-keyerror-for-invalid-fragment-type-name
* 7d50df0 (origin/fix-keyerror-for-invalid-fragment-type-name) Return proper error instead of KeyError for invalid fragment type name

* dc38300 update changelog for 0.7.5
* fe6be9e Merge pull request 163 from okorienev/sqlalchemy_2_0_support
* 3f1c798 Add sqlalchemy>2 support,run tests againts different sqlalchemy versions
* 13a538b update docs for 0.7.4