Add version 0.0.6

[armurox]

Resolved Issues:

• RedactingFilter.redact method converts all datatypes to string #7

Added Features:

• Redaction now applied to generic mapping types, including:
  1. dict
  2. collections.OrderedDict
  3. frozendict.frozendict
  4. collections.ChainMap
  5. types.MappingProxyType
  6. collections.UserDict
     and any other mapping class that inherits from collections.Mapping