Future-AsyncAwait 0.31_002

on Perl CPAN

• Rename set_suspendhook to wrap_suspendhook; follow the API
  inspiration from perl's own wrap_keyword_plugin()
  

[BUGFIXES]

• Actually use perl's own wrap_keyword_plugin()
  
• Avoid compiler warning about int/IV mismatch in printf (RT130285)
  
• Use warn_sv() to avoid compiler wraning about formatless warn() on
  a plain PV (RT130285)