Install various Ruby versions and implementations

Current versions

ruby-build requires the following formulae to be installed:
autoconf 2.69 Automatic configure script builder
pkg-config 0.29.2 Manage compile and link flags for libraries
openssl 1.0.2n SSL/TLS cryptography library

Reverse dependencies

The following formula requires ruby-build to be installed:
ry 0.5.2 Ruby virtual env tool

Recent formula history

Mike McQuaid ruby-build: remove :run.
SHIBATA Hiroshi ruby-build 20180224
SHIBATA Hiroshi ruby-build 20171226 (#22135)
SHIBATA Hiroshi ruby-build 20171215 (#21736)
SHIBATA Hiroshi ruby-build 20170914

Formula code at GitHub