v0.006

  * Added HTML transformer for use when HTMLExtractMain does not give
    desired output
  * Added -t command line switch to allow selection of transformers
  * Use UTF-8 to encode MOBI files
  * Bugfix for article test
  * Set Moo version dependency
  * Handle HTML fragments as HTML in files
  * Bugfix for HTML articles with no title
  * Handle HTML pages with two title tags and extra whitespace
  * Format title for text with leading whitespace and long lines
  * Added config table plus support for schema versioning and upgrades