update changelog for release 0.5.6
To generate the log, run `git log --pretty='* %h - %s (%an, %ad)' TAGNAME..HEAD .` replacing TAGNAME and HEAD as appropriate.
+# 0.5.6 - Bugfix Release
+
+* a0dc946 - fix: store matching rules in a set to avoid duplicates (Ronald Holshausen, Sun Nov 10 10:08:34 2019 +1100)
+* 66c328e - feat: add colons to the allowed path characters (Ronald Holshausen, Sun Oct 27 17:13:14 2019 +1100)
+* 869af94 - bump version to 0.5.6 (Ronald Holshausen, Fri Sep 27 14:57:05 2019 +1000)
+
# 0.5.5 - Oniguruma crate for regex matching
* defe890 - fix: switch to the Oniguruma crate for regex matching #46 (Ronald Holshausen, Fri Sep 27 14:35:16 2019 +1000)
