SyntaxError with Ruby 2.2.10

[etagwerker]

Hey @jnraine,

These are some issues that I ran into when testing the gem with Ruby 2.2.10. It's a follow up issue to #9.

SyntaxError: /Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:121: syntax error, unexpected '.'
    new_shitlist&.delete
                  ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in `require'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in `block in require'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:240:in `load_dependency'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in `require'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/ten_years_rails.rb:2:in `<top (required)>'
/Users/etagwerker/Projects/fastruby/e-petitions/config/application.rb:7:in `<top (required)>'
/Users/etagwerker/Projects/fastruby/e-petitions/Rakefile:4:in `require'
/Users/etagwerker/Projects/fastruby/e-petitions/Rakefile:4:in `<top (required)>'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/rake-12.3.2/exe/rake:27:in `<top (required)>'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/bin/ruby_executable_hooks:24:in `eval'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/bin/ruby_executable_hooks:24:in `<main>'
(See full trace by running task with --trace)

Root cause: Ampersand operator was introduced in Ruby 2.3.0 (more here: http://mitrev.net/ruby/2015/11/13/the-operator-in-ruby/)

SyntaxError: /Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:88: syntax error, unexpected <<
      message = <<~MESSAGE.red
                  ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:95: syntax error, unexpected tIDENTIFIER, expecting keyword_do or '{' or '('
        To check your failures locally, you can run:
                ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:95: syntax error, unexpected tIDENTIFIER, expecting keyword_do or '{' or '('
        To check your failures locally, you can run:
                                               ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:97: dynamic constant assignment
        DEPRECATION_TRACKER=compare bundle exec rspec #{c...
                            ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:97: syntax error, unexpected tIDENTIFIER, expecting keyword_do or '{' or '('
...RECATION_TRACKER=compare bundle exec rspec #{changed_buckets...
...                               ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:103: syntax error, unexpected $undefined, expecting keyword_do or '{' or '('
        See \e[4;37mdev-docs/testing/depre...
             ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:103: syntax error, unexpected ';', expecting ']'
        See \e[4;37mdev-docs/testing/deprecati...
                 ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:103: syntax error, unexpected $undefined, expecting keyword_end
...testing/deprecation_tracker.md\e[0;31m for more information.
...                               ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:103: syntax error, unexpected ';', expecting ']'
...ing/deprecation_tracker.md\e[0;31m for more information.
...                               ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:103: syntax error, unexpected tIDENTIFIER, expecting keyword_do or '{' or '('
...md\e[0;31m for more information.
...                               ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/deprecation_tracker.rb:121: syntax error, unexpected '.'
    new_shitlist&.delete
                  ^
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in `require'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in `block in require'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:240:in `load_dependency'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in `require'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/ten_years_rails-0.2.0/lib/ten_years_rails.rb:2:in `<top (required)>'
/Users/etagwerker/Projects/fastruby/e-petitions/config/application.rb:7:in `<top (required)>'
/Users/etagwerker/Projects/fastruby/e-petitions/Rakefile:4:in `require'
/Users/etagwerker/Projects/fastruby/e-petitions/Rakefile:4:in `<top (required)>'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/gems/rake-12.3.2/exe/rake:27:in `<top (required)>'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/bin/ruby_executable_hooks:24:in `eval'
/Users/etagwerker/.rvm/gems/ruby-2.2.10@petitions/bin/ruby_executable_hooks:24:in `<main>'
(See full trace by running task with --trace)

Root cause: The squiggly operator was introduced in Ruby 2.3.0 (more here: https://infinum.co/the-capsized-eight/multiline-strings-ruby-2-3-0-the-squiggly-heredoc)

I'm working on a PR for these issues. I'll submit it later today.

Thanks!