Update to ruby-raindrops to 019.1.
pkgsrc change: update HOMEPAGE.
=== raindrops 0.19.1 / 2020-01-08 09:31 UTC
This release fixes some warnings on newer Rubies.
We're no longer on bogomips.org since it's due
for expiry and I can't pay extortionists for a .org, so
s/bogomips.org/yhbt.net/ for now, and be prepared to move again
when extortionists move onto extorting the .net TLD.
doc: switch homepage to dark216
ext/raindrops/extconf: fix cflags reset on ancient CC
fixes for newer rubies
replace bogomips.org with yhbt.net
fec0f6ed4a