Minimal changes
Merge branch 'master' of https://github.com/antifrize/NMlab5

Conflicts:
	.idea/workspace.xml
Merge branch 'master' of https://github.com/antifrize/NMlab5

Conflicts:
	.idea/workspace.xml
Merge branch 'master' of https://github.com/antifrize/NMlab5

Conflicts:
	.idea/workspace.xml
	AppConstants.py
	GridGraphModel.py
	ImplicitGraphModel.py
	lab5.py
Merge branch 'master' of https://github.com/antifrize/NMlab5

Conflicts:
	.idea/workspace.xml
	AppConstants.py
	GridGraphModel.py
	ImplicitGraphModel.py
	lab5.py
explicit and implicit works