adds "hidden" chest and small change to breakable_block
added boulder and support for larger breakable block
Merge branch 'master' into hidden-chest
updated boulder to have animation
adds dying animation
forgot image
adds sfx and speeds up animation
sound property
Merge remote-tracking branch 'upstream/master' into hidden-chest
Merge pull request #1338 from CalebJohn/hidden-chest

"Hidden chest"