dist: handle singleton maps in multiindex
dist: fix collection of map index accesses
dist: fix bug in multiindex singletons
multiidx: made index return a bag
dist: Support range queries
dist: make all accesses of mmaps use slice_idx
dist: sorted out some parse errors
dist: more parse errors
print: fixed up some printing issues
print: fix issue with laziness
ocamlinit: remove bolt
driver: fixed multiindex flags