Minor maintenance / bug fix release
This release brings the following new functions:
Added parallel bulk transfers and margo_wait_any.
Reduces CPU consumption when profiling is enabled
Added the following functions:
margo_push_prefinalize_callback
margo_pop_prefinalize_callback
margo_provider_push_prefinalize_callback
margo_provider_pop_prefinalize_callback
margo_deregister
margo_request