Implement call/5 to take #call_opts{}
Implement call/5 to take #call_opts{}

Use the new prefix field in #call_opts{} to hold
the prefix

Signed-off-by: Essien Ita Essien <bd402154b008803b915ff3326ddb7528f7e13a6b@gmail.com>

unisontech/detergent