Many changes (Editing mode!)#7

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FranchuFranchu wants to merge 4 commits intoestevaofon:masterfrom

FranchuFranchu:master

Commits on Jul 13, 2019

"S" toggles gravity and "N" is useless
FranchuFranchu
committed

Commits on Jul 14, 2019

Commits on Jul 16, 2019

Added a way of saving and loading maps
FranchuFranchu
committed