Merge branch 'release/2.5.1' into develop
Note that 2.5.1 has been yanked

@bklang is unhappy with the fixes to outbound calls which require corresponding fixes to the Rayo server being included in a patch release since they are backward incompatible. They need to either be made backward compatible before a re-release (preferable) or delayed until 2.6.0
handlers can be registered with additional options
Merge pull request #475 from christophersansone/register_handler_with_options

[BUGFIX] Call handlers can be registered with additional options
[DOC] Fix broken record beep docs

Fixes #480
[BUGFIX] Ensure backward compatibility with Rayo servers which don't support requested outbound call URIs
Include changelog notes in the correct release
[UPDATE] Bump to 2.5.2
Merge branch 'release/2.5.2'