Fix incorrect heartbeats in HTTP transports
Pass httpPath to HTTP transports
Don't start form-post with &

Some webservers don't deal with it well.
Merge remote-tracking branch 'cedrichan/auth-querystring' into r2.2.3
Fix composeQuery tests
Bump version to 2.2.3
Update the changelog for version 2.2.3
Update distribution files to version 2.2.3
Merge branch 'r2.2.3'