Support older rubies

[johnsyweb]

Context

https://github.com/envato/solid_octane_service/pull/190 and https://github.com/envato/solid_octane_service/pull/191 failed to annotate because solid_octane_service is on Ruby 2.3.5, which doesn't include ruby/rubygems#1659 . https://github.com/envato/solid_octane_service/pull/192 worked with this patch, which isn't perfect but I think is a reasonable fallback for old rubies.

Change

• Use Gem::Versions#segments where Gem::Versions#canonical_segments isn't available.
• Give @orien some long overdue credit for his amazing efforts
• Fix Rubocop complaints (cherry-picked from Address gem build warnings... #40 )

[orien]

Thanks @johnsyweb 😄

It's interesting that the build didn't pick that up. It runs against Ruby 2.3.

Ah, I see the Ruby 2.3 Docker image we use has the latest Rubygems installed.
https://github.com/docker-library/ruby/blob/9e6a656108d5227e5788dcf5f0e4c63e726dc3e6/2.3/stretch/Dockerfile#L13

[johnsyweb]

Ah yes. Perhaps we should just fail loudly on old ruby gems.

[johnsyweb]

I think #46 is a better approach.