#95 markdown instead of rst #80

Closes #95

See merge request flatland/flatland!205

get shortest paths from distance map

See merge request flatland/flatland!202

Merge branch '190-clean-up-examples-and-tests-where-observationbuilders-inherit-from-treeobsforrailenv' into 'master'

directly inherit from ObservationBuilder and not from TreeObsForRailEnv when it is not necessary

Closes #190

See merge request flatland/flatland!204

Merge branch 'master' of ssh://gitlab.aicrowd.com/flatland/flatland into get-shortest-paths-from-distance-map

add visualization for distance map

Closes #189

See merge request flatland/flatland!203

bugfix load flatland

See merge request flatland/flatland!201

utility for getting entry directions of a cell

See merge request flatland/flatland!199

bugfix create existing folder

See merge request flatland/flatland!200

#80 Why do we not allow actions to change while running in a cell?

See merge request flatland/flatland!198

Merge branch '173-refactoring-type-hints-named-structures-for-observation-builders-and-predictors' into 'master'

Refactoring: add return types for ObservationBuilder.get(self, handle: int =...

Closes #173

See merge request flatland/flatland!196

#186 bugfix next_malfunction below zero

Closes #186

See merge request flatland/flatland!197

Refactoring: add return types for ObservationBuilder.get(self, handle: int = 0) and ObservationBuilder.get_many(self, handles: Optional[List[int]] = None)

Resolve "Test for Multi-Speed"

Closes #163 and #168

See merge request flatland/flatland!194