Does not build with ocamlc >= 4.06

[sampollard]

If you compile with e.g. ocamlc 4.06 you get a bunch of warnings like this:

If you need to stay compatible with OCaml < 4.07, you can use the 
stdlib-shims library: https://github.com/ocaml/stdlib-shims

Then an error:

ocamlc -c -I b_and_b -I INTERVAL more_num.mli
File "more_num.mli", line 13, characters 16-23:
13 | val numerator : Num.num -> Big_int.big_int
                     ^^^^^^^
Error: Unbound module Num
make: *** [Makefile:183: more_num.cmi] Error 2

I got around this by doing ocaml switch create 4.05.0, which then built successfully. You may want to update the README.md. This was on Ubuntu 20.04.

[monadius]

Another way to solve your compilation issue is to install the legacy Num library for OCaml 4.06: opam install num. I will update the Readme file with this info.

I don't get any warnings about Stdlib on macOS with OCaml 4.06.1 and OCaml 4.07.1. I am going to test FPTaylor on Ubuntu and decide the best course of action: require stdlib-shims for OCaml < 4.07 or update the minimal required OCaml version to 4.07.