Add BatStream.concat_map .
Inline concat_map.
Int.copysign operator (+tests)
copy copysign signature
Merge pull request #553 from c-cube/int_sign

Int.copysign operator (+tests)
Merge pull request #558 from c-cube/master

version management scripts
Merge pull request #526 from Drup/master

concat_map inlining for BatStream and BatEnum
batEnum: fix combine's count in presence of infinite enums (fixes #562)
Make BatHashtbl.modify_opt/def resize the table

As pointed out by @jj-issuu in issue #560 "The functions modify_opt and
modify_def in BatHashtbl never resize the hash table, so they have O(n)
performance if the table is never modified through a function like add
or replace."

This fixes the issue by implementing the functions using the standard
add/remove/replace functions.
Merge pull request #563 from mads379/560-rehash-modify-def/opt

Make BatHashtbl.modify_opt/def resize the table
batString : added fold_lefti and fold_righti
Merge pull request #564 from nukiFW/master

batString : added fold_lefti and fold_righti
batSubstring : fix fold_left, add fold_lefti, fold_righti + Test modification
Merge pull request #565 from nukiFW/master

batSubstring : fix fold_left, add fold_lefti, fold_righti
batSubstring : Added a lot of test + fix explode, tokens, fields and change span
Substring:Change test of create
Merge pull request #569 from nukiFW/master

batSubstring : Added a lot of test + fix explode, tokens, fields and cha...
remove CamlinternalPr for compilation with OCaml 4.02.0
Revert "remove CamlinternalPr for compilation with OCaml 4.02.0"

This reverts commit c81ff0c5522b1c84a1b6a13b7525f065ebe816f9.
support comparison operator for prefilter on version