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

agents keep going forward if motion started, until stopped + RailEnvActions enum + agent.moving flag for the motion status of each agent + penalties for starting/stopping agents, but set to 0

Resolve "Agent directions in Observations"

See merge request flatland/flatland!40