Batteries 2.6.0

Detailed changelog

• added Bat{Set,Map,Splay}.any and fixed Bat{Map,Splay}.choose
  #751
  (Cedric Cellier)

• added BatList.favg and faster BatList.fsum
  #746
  (Gabriel Scherer, Francois Berenger)

• install .cmt and .cmti files
  #740
  (Francois Berenger, Gabriel Scherer)

• BatMap: added find_default
  #730
  (Francois Berenger)

• added scripts/test_install.sh
  #743
  (Francois Berenger)

• BatHashtbl: added {to|of}_list, bindings
  #728
  (Francois Berenger, Thibault Suzanne)

• added {BatList|BatArray}.shuffle
  #702, #707
  (Francois Berenger, Gabriel Scherer)

• Clarification and improvements to the documentation
  #682, #685, #693
  (Florian Angeletti, Johannes Kloos, Michael Färber)

• make LazyList.split_at lazy:
  split_at : int -> 'a t -> 'a t * 'a t
  would previously eagerly force the prefix of the list
  and only be lazy in its second returned value.
  #694
  (Michael Färber, Gabriel Scherer, Thibault Suzanne)

• Add List.{map2i,iter2i}
  #696
  (Thibault Suzanne)

• Added Result.{map,map_both}
  #705
  (Ifaz Kabir)

• Add {BatSet,BatMap}.{Int,Int32,Int64,Nativeint,Float,Char,String} as
  common instantions of the respective Make functor.
  #709, #712
  (Thibault Suzanne, François Bérenger)

• BatString: add chop : ?l:int -> ?r:int -> string -> string
  #714, #716
  (Gabriel Scherer, request by François Bérenger)

• BatSet: make to_array allocate the resulting array at first
  instead of using Dynarray (faster, uses less memory).
  #724
  (Thibault Suzanne)

• BatList: add fold_left_map : ('a -> 'b -> 'a * 'c) -> 'a -> 'b list -> 'a * 'c list
  #734
  (Thibault Suzanne, review by Gabriel Scherer, request by Oscar Gauthier)

• add BatList.frange : float -> [< `To | `Downto ] -> float -> int -> float list
frange 0. `To 1. 3 is [0.; 0.5; 1.].
  #745
  (François Bérenger)