#155 return in info field whether agent is malfunctioning; renamed...

Closes #155

See merge request flatland/flatland!175

renamed action_required instead of entering and remove two if False conditions in sparse_rail_generator

#155 return in info field whether agent is malfunctioning; renamed "actionable" to "entering" which describes content better

Fixing generator input

See merge request flatland/flatland!174

#154 actionable agents in info dict

Closes #154

See merge request flatland/flatland!172

Update flatland_2.0.md

See merge request flatland/flatland!171

Update changelog.md

See merge request flatland/flatland!170

Update changelog.md

See merge request flatland/flatland!169

153 bug fixes multi speed

Closes #153

See merge request flatland/flatland!168

Update changelog.md

See merge request flatland/flatland!167

Updated flatland 2.0 example
added new feature: Malfunctioning agents will automatically resume operation when they are fixed

Update changelog.md

See merge request flatland/flatland!166

Update flatland_2.0.md

See merge request flatland/flatland!165

Update flatland_2.0.md

See merge request flatland/flatland!164

152 update observations

Closes #152

See merge request flatland/flatland!163

Update changelog.md

See merge request flatland/flatland!162