hybridify
Hybridify. Hybrids. Create sync or async function to support both promise and callback-style APIs in same time. Using the power of [relike][].
is-hybrid
Check whether an object looks like Hybrid which is promises-a+ promise and callback api
create-callback
Create callback api from synchronous function. Same as `make-callback`, but won't handle generators and if async function is given returns it.
