Bump to 5.0.1 and write changelog

Author: aantron

CHANGES

@@ -1,3 +1,9 @@
+===== 5.0.1 (2019-12-22) =====
+
+====== Bugs fixed ======
+
+  * Additional fix for libev detection under esy (#757, Antonio Nuno Monteiro).
+
 ===== 5.0.0 (2019-12-15) =====
 
 ====== Breaking ======

README.md

@@ -1,6 +1,6 @@
-# Lwt    [![version 5.0.0][version]][releases] [![Travis status][travis-img]][travis] [![AppVeyor status][appveyor-img]][appveyor]
+# Lwt    [![version 5.0.1][version]][releases] [![Travis status][travis-img]][travis] [![AppVeyor status][appveyor-img]][appveyor]
 
-[version]:      https://img.shields.io/badge/version-5.0.0-blue.svg
+[version]:      https://img.shields.io/badge/version-5.0.1-blue.svg
 [releases]:     https://github.com/ocsigen/lwt/releases
 [travis]:       https://travis-ci.org/ocsigen/lwt/branches
 [travis-img]:   https://img.shields.io/travis/ocsigen/lwt/master.svg?label=travis