Fix auto-reshim on bundle install and gem uninstall.

Fix marshal data too short error for default gems

Update ruby-build to v20200401

Updated latest ruby-build version

Tell Travis to test against the current branch's latest commit

Fix output of `asdf list-all ruby` when downloading ruby-build

Fix install / list-all commands always re-download ruby-build

Update ruby-build version to ruby 2.7

Update ruby-build to v20191223

Update ruby-build version to v20191205

Update ruby-build version to 20191124

Fix `bin/list-all`

Also, use `grep -v` (-v: Invert match) to remove the `topaz-dev` from
the results.

Fixes #142.

Update asdf-ruby to use version 20191111

Update ruby-build to v20191102

* Add jruby-9.2.9.0
* Require Java 8+ for JRuby 9.2+

Skip recompiling openssl for truffleruby

Update ruby-build to v20191024

Adds Ruby 2.7.0-preview2

Update ruby-build to v20191004

This adds Ruby 2.4.9.

Update ruby-build to v20191002

This adds Ruby 2.4.8, 2.5.7 and 2.6.5, as well as TruffleRuby
19.2.0.1.