bumped up version

added composer files

added CEL event to supported event list

updated to 1.61.0

updated version

client will now check if a response is complete before trying to add …

…an event to it (OriginateResponse issue,when response and events arrive together with same actionid)

added predicates

better build system, added asynchronous agi support, updated url name…

…s in sources

all available messages are now processed per process() call, added Jo…

…shua Elson to thanks section in readme

fixed typo in example