fix openChest assertion. closes #112
add furnace API
refactor inventory window clicking
fix equipping things
fix bug where window.selectedItem wasn't decreasing on right click
fix window clicking bug
fix fuel percentage
remove log statements
fix bot.equip regression
update to minecraft-protocol 0.7.0
Merge branch 'furnace'
Release 0.0.19
add dispenser support
Release 0.0.20