v3.9.2

Update operation id's to be unique and avoid future conflicts with ot…

v3.9.1

Update operation id's to be unique and avoid future conflicts with ot…

v3.9.0

Wrap all API methods in try/catch blocks

v3.8.1

Fix syntax error

v3.8.0

Add ability to specify custom hold music via a URL

v3.7.0

Fix syntax error

v3.6.0

Add keepalive

v3.5.1

Skip phone messages if patron has no phone number to call

v3.5.0

Handle letter_code as arrayref

v3.4.2

Fix error in letter code limit