Merge pull request #182 from alxlnk/master Preserve numeric keys.

Fix typo 

Merge pull request #143 from cebe/patch-1 Fix Url Matching for similar patterns

Merge pull request #133 from codemix/131-geoip GeoIp tests and code reorganization

Merge pull request #128 from codemix/127-optional-session Make use of session optional

Update README and add trace on change event 

Merge pull request #116 from carspending/master Refactor so that persistence is extendable.

Improve line wrapping in comments 

Issue #105 Fix missing slug params with UrlNormalizer 

Issue #96 Add tests with disabled detection / persistence