Merge branch 'master' of github.com:php-ds/ds

Author: rtheunissen

CHANGELOG.md

@@ -7,6 +7,9 @@ This project follows [Semantic Versioning](http://semver.org/).
 - [x] Memory leaks during map when callback throws an exception.
 - [x] Memory leaks when structures contain themselves
 
+## Added
+- [ ] Show version info in `phpinfo()`
+
 ### Improvements
 - [x] `Map::map` and `Map::filter` are now slightly faster.