2.0.13

• Change HTMLFormatter to require the template argument which may be a template name
  or a Template object.
• Allow arbitrary *args and **kwargs to be passed into *Exporter.write and
  *Exporter.read to enable propagation from write to read
• Add short_name and long_name for use downstream by clients
• Add export-specific format as the first preferred format
  • This is a better default which enables specific formatting when needed. The more general format can be reused across formatters, but when very specific formatting is necessary, this default is preferred.
• Refactor DataField.model and DataField.field to take in account Lexicon and ObjectSet models
  • The real field and model instances are now named real_field and real_model, respectively.
• Fix #55, Lexicon.label is now correctly used by the DataView
• Rename sync subcommand to init
• Rename SYNC_ENUMERABLE_MAXIMUM to ENUMERABLE_MAXIMUM
• Remove orphaned command in favor of new check that performs multiple setup
  checks as well as check for invalid datafields.
• Remove searchable model field since this applies only to text-based fields.
  • This has been repurposed as a deprecated computed property
• Fix #45, allow dict-based settings to be updated, but not overridden
• Remove DataField.data_source field
  • There was no functional utility of this field and is (currently) out of the scope for Avocado