Fixed doc typo (sum -> fsum). also clarified that elements in the lists are of a specific type.
added sum and fsum to array module for symmetry with List module.
Merge pull request #336 from rgrinberg/master

sum and fsum into Array (like in List) + small doc fix.
Update setup.ml based on _oasis
Bump version to 2.0
Rename BatArray.eq to equal
Remove Map implementations in batMap, clean up some whitespace in BatMap.S
Un-expose File.finally
added enum to BatSubstring to for consistency with BatString.
tests for BatSubstring.enum
Merge pull request #337 from rgrinberg/master

BatSubstring.enum
use Stdlibs Num.{pred,succ} instead of homebrewn

- Int won't overflow
- Will also work for rationals.
add special cases to BatNum.of_float

- handle nan and pos./neg. infinities
- add appropriate test cases.
Merge pull request #339 from madroach/master

improved Num.of_float