Fix #90 extra query param should not be included in the query string if the value is null
Pass options from the AJAX request to parseState
Merge pull request #91 from leoc/master

Pass options from parse to parseState
Pass options to parseRecords also
Fix #89 allow a sortValue value extractor to pass to setSorting and _makeComparator
Fix #92 increasing page size no longer throws error
Update license copyright year
Version 1.3.1