Remove clearing as numbers of `min`, `max` and `range` rules. Fixes #455. Closes gh-528.

These rules are fully suitable to check any comparable JavaScript objects such as strings or dates. Also clearing prevents HTML5 date input fields to work when these rules are coming from HTML.
Readme update
Release 1.11.0
Bump post-release version
Fix post-release version
Merge branch 'master' of github.com:jzaefferer/jquery-validation