Merge pull request #59 from bulldog98/master

added a mv grinder
added a recipe for MESE sand tubes
convert remove_items to avoid crashes
Merge pull request #61 from hdastwb/patch-1

Convert remove_items to a number in item_drop to avoid crashes
added connect_sides to appropriate tube tables
Merge pull request #60 from hdastwb/mesesandtube

MESE Sand Tubes
Merge pull request #62 from hdastwb/connect_sides

add tube routing support
simlified a statement