Added Factory 11.
Fixed platform riding behaviour.
Merge branch 'master' of https://github.com/jokigenki/Foxtrot

# By Tim Frost
# Via Tim Frost
* 'master' of https://github.com/jokigenki/Foxtrot:
  All Farm tiles amended. BG Farm 1_1 updated BG Farm 1_2 updated BG Farm 1_3 updated