20200115

• Compatible with OCaml 4.10.0.

• [PR 36] GC issue when registering a function with a dynamically allocated docstring.
  (Fixed by Laurent Mazare, #36)

• [PR 34] Ensure that every function starting with CAMLparamK ends with CAMLreturnX.
  (Fixed by Xavier Clerc, #34)

• [GitHub issue #37] Fix test suite: list object has no attribute clear
  (Reported by Olaf Hering, #37)

• [PR 38] Check for executable called python3.
  (Fixed by Olaf Hering, #38)

• [PR 39] Expose is-instance and is-subclass.
  (Contribution by Laurent Mazare, #39)

• [PR 44] Expose some GIL functions (functions from the Python C API related to the global interpreter lock.
  (Contribution by Laurent Mazare, #44)

• Fix dynamic loading of stubs.
  (Fixed by Stéphane Glondu)