Pull changes from https://github.com/aimclub/GOLEM/pull/130

* Upd release version

* Add pre-release tests actions on 'release' branch; Disable auto-publish

* Upd GOLEM version

* Remove manual-build.yml (dup of integration-build.yml)

* Add integration tests badge to README

* Revert "Upd GOLEM version" (for PR in master)

This reverts commit 257ff16e.

* Upd python version in publish and workflows

* Fix leftover python version 3.7

* Remove python version 3.7 in requirements

* Update links to the project

* Update package version

* Remove sklearn without version from requirements

simplified requirements setup according to the needs

* Custom models corrections

* ntlk fix, python 3.6 tests disabled

* edit requirements

* change location requirements

* refactor requirements

* increase time for manual-build

* change time working for example and cases tests

* reduce the time

* initial chain SA

* metric refactor

* add NodeReplacement

* add random node replacement

* refactor chain analysis

* add test

* refactor && tests without mock

* add example

* fix test

* add ModelAnalyze && viz

* fix test(remove mock)

* extend time limit

* fix plot data

* remove limit

* fix limits

* multiprocessing refactor

* fix plot && add data

* add experiments && viz

* fix tests

* minor fixes

* fix test

* chain fixes && sa viz

* fix docs

* fix docs

* upd docs

* requested changes

* add interactive mode

* add SA to api docs

* fix docstrings

* add SA RTD example

* rebase&&doc imgs

* fix docs

* fix imports

* fix docs text

* add modelSA test

* fix layout
Co-authored-by: Irina Barabanova <ira@ws-192-168-0-105.st-net.ru>

* init schedule

* fix condition

* fix time

* replacement

* quotes fix

* add condition

* fix condition

* fix time

* github context

* test echo

* schedule experiment

* change to manual

* add time limit

* add time limit 2