1.5.0

• float / number type now support range restrictions
• ranges on non number types (e.g. seq, string) now need to be non negative.
• Fixed encoding bug triggered when both regex matching-rule 'any' and 'all' found keyword that
  failed regex match. Added failure unit tests to cover regex matching-rule 'any' and 'all' during
  failed regex match. Updated allowed rule list to include matching-rule 'all'.
• Changed _validate_mappings method from using re.match to re.search. This fixes bug related to
  multiple keyword regex using matching-rule 'any'. Added success unit tests to test default, 'any',
  and 'all' matching-rule.