added BatDeque.eq function to compare Deques by content
batSeq.{of_list, equal} and some tests
levenshtein distance on strings
Merge pull request #463 from c-cube/deque-equal

added BatDeque.eq function to compare Deques by content
Merge pull request #464 from c-cube/seq-fixes

batSeq.{of_list, equal} and some tests
small optimization for BatString.edit_distance
Merge pull request #465 from c-cube/levenshtein

levenshtein distance on strings
Add failing unit test for BitSet

This exposes a bug where resizing of a BitSet will hang when expanding to size
1 modulo 8.
Fix infinite loop in BitSet

When a bitset needs to be resized to set the (x)th bit, it should grow
to have size (x+1). Previous code only grew to size (x), leading to an
infinite loop because the BitSet kept being too small.
Merge pull request #468 from jj-issuu/master

Fix infinite loop in BitSet
BatOption.ord instance, solving #393
Merge pull request #469 from c-cube/batoption-ord

BatOption.ord instance, solving #393
enum.print_at_most (issue #425)
cartesian product on  arrays (tests won't pass...). issue #444.
factored enum.{print,print_at_most} into a common function
added interface for mem_cmp
implementation and test for mem_cmp
the rec keywork was overused
Merge pull request #476 from UnixJunkie/not_so_rec

the rec keywork was overused
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