bumping to next hotfix
fixes #36
try to count everything, even real values; always sort the result by count
refresh
doesn't drop numeric cols anymore. Doesn't break on them, only quality of results depend on cardinality. It's for the user to decide
refresh
refresh
test case for merge
run on both backends
unit test for quantile cols for data frames
unordered df comparison, good for all tests, factor out
add exact mode and deal with non unique names (slow)
factor out cmp.df and use across the board
ignore quickcheck files
formatting
debug code be gone
completed reorg of  how gather's dummy key is

processed
refresh shows exact mode for quantiles
unit test for count
test for top/bottom k