v2.7.0

Add four features:

• Convert XMP tag of type LangAlt to a dict.
  Old version:

  >>> img.read_xmp()['Xmp.dc.title']
  'lang="x-default" test-中文-, lang="de-DE" Hallo, Welt'

  Now:

  >>> img.read_xmp()['Xmp.dc.title']
  {'lang="x-default"': 'test-中文-', 'lang="de-DE"': 'Hallo, Welt'}

• Add Image.get_mime_type()

  >>> img.get_mime_type()
  'image/jpeg'

• Add Image.get_access_mode()

  >>> img.get_access_mode()
  {'exif': 'read+write', 'iptc': 'read+write', 'xmp': 'read+write', 'comment': 'read+write'}

• Add registerNs()

  >>> img.modify_xmp({'Xmp.test.mytag1': 'Hello'})
  RuntimeError: No namespace info available for XMP prefix `test'
  >>> pyexiv2.registerNs('a namespace for test', 'Ns1')
  >>> img.modify_xmp({'Xmp.Ns1.mytag1': 'Hello'})
  >>> img.read_xmp()['Xmp.Ns1.mytag1']
  'Hello'

See the Tutorial for details.