Dialplan generator.
Merge common stuff into AbstractTag.
Fleshed out parameters of tags.
Fix up hydration.
Test setters and getters.
Test that the tag type in PHP is retained for the age of the DOMDocument.
Initial loading work.
Added example.
Added Live and Machine tags.
Easier content setter.
Added test for whether path parameters are balanced.
Merge branch 'feature-ivr-generator'
Mark loading test incomplete, as it's not really ready.
Merge branch 'master' into 1.1