chore(version): 2.5.0 (Homebrew#288)

macho: 2.4.0 (Homebrew#284)

* rubocop, gemspec: Enforce Ruby >= 2.5

This is the earliest Ruby we test in CI.

* fat_file: RuboCop autocorrection

* macho: 2.4.0

macho: 2.3.0 (Homebrew#271)

macho: 2.2.0

macho: 1.4.0

Another compatibility release.

macho: 1.3.1

This is 1.3.0, but with the correct version information
in the gemspec.

*: Ruby 2.0 compatibility branch

This branch is a special compatibility branch for
Ruby 2.0, 2.1, and 2.2.

It represents the last version of ruby-macho to support
these older Rubies.

macho: 2.1.0

macho: 2.0.0

macho: 1.3.0.pre.1