Merge branch 'master' of gitlab.aicrowd.com:flatland/flatland into 51-run-examples-in-ci-including-notebooks

#56 bugfix wrong length of observation vector; #47 added two flags whether...

Closes #47 and #56

See merge request flatland/flatland!52

#25 use RailEnvActions enum instead of hardcoded action ints

Closes #25

See merge request flatland/flatland!51

#56 bugfix wrong length of observation vector; #47 added two flags whether there is another agent on the same position in the same or opposite direction

Example runs without setting working dir to examples folder

See merge request flatland/flatland!50

Merge branch 'master' of gitlab.aicrowd.com:flatland/flatland into example-runs-without-setting-working-dir-to-examples-folder

52 code cleanup apidoc first steps

See merge request flatland/flatland!49

50 removed stale code (flake8 E800)

Closes #50

See merge request flatland/flatland!48

Resolve "code cleanup: remove stale code"

See merge request flatland/flatland!47

formatted everything with IntelliJ/PyCharm formatter, optimizing imports

See merge request flatland/flatland!46

Debug build and deploy docs

See merge request flatland/flatland!45

flake8 master

See merge request flatland/flatland!43

Keep moving

See merge request flatland/flatland!42