Implement Save (Allow/Forbid/As in parent) map property
Fix the acquisition of battle backgrounds
Test whether encoding is valid by recoding a backslash
Improve animation speed
Fix "Same as parent" BGM map property and a mistake of mine
Fix hero facing when triggered
Use the prelock direction for spinning animation like in RPGM
Update interpreter after each autostarting event is set up
Update self movements when GetContinueEvents is true and

reset move_route_repeated flag when a new move route is forced
Use middle frame pattern when changing a character's graphic
Fix sprite flashing and another mistake of mine
Merge pull request #304 from Zegeri/development

Improve map properties and fix some bugs