Disabled media URL encoding to support inbound MMS media retrieval

Merge pull request #8 from Bandwidth/patch/media-encoding

Removed media id encoding

Fixed ssml for speak sentence when nested in a gather

6.14.1

Merge pull request #7 from Bandwidth/task/fix-ssml-regex-nested-speak…

Added sip uri and tag bxml

6.14.0

removed unneeded files (#5)

Allowed lower versions of python-dateutil

6.13.3

Update setup.py