Syntax error on when clausules ⚠️

[Victorcorcos]

Steps to reproduce 🦮

1. Add gem 'yahoo_stock' to Gemfile
2. bundle install
3. rails c

The result 🪲

/Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/activesupport-6.0.3.4/lib/active_support/dependencies.rb:324:in `require': /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/yahoo_stock-1.0.2/lib/yahoo_stock/interface/history.rb:86: syntax error, unexpected ':', expecting keyword_then or ',' or ';' or '\n'
...                when :daily   : 'd'
...                              ^
/Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/yahoo_stock-1.0.2/lib/yahoo_stock/interface/history.rb:87: syntax error, unexpected keyword_when, expecting keyword_end
                    when :weekly  : 'w'
                    ^~~~
/Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/yahoo_stock-1.0.2/lib/yahoo_stock/interface/history.rb:88: syntax error, unexpected keyword_when, expecting keyword_end
                    when :monthly : 'm'
                    ^~~~
/Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/yahoo_stock-1.0.2/lib/yahoo_stock/interface/history.rb:186: syntax error, unexpected keyword_end, expecting end-of-input (SyntaxError)
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/activesupport-6.0.3.4/lib/active_support/dependencies.rb:324:in `block in require'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/activesupport-6.0.3.4/lib/active_support/dependencies.rb:291:in `load_dependency'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/activesupport-6.0.3.4/lib/active_support/dependencies.rb:324:in `require'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/yahoo_stock-1.0.2/lib/yahoo_stock.rb:11:in `<top (required)>'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/bundler-2.1.4/lib/bundler/runtime.rb:74:in `require'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/bundler-2.1.4/lib/bundler/runtime.rb:74:in `block (2 levels) in require'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/bundler-2.1.4/lib/bundler/runtime.rb:69:in `each'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/bundler-2.1.4/lib/bundler/runtime.rb:69:in `block in require'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/bundler-2.1.4/lib/bundler/runtime.rb:58:in `each'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/bundler-2.1.4/lib/bundler/runtime.rb:58:in `require'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/bundler-2.1.4/lib/bundler.rb:174:in `require'
	from /Users/victorcosta/Desktop/repositories/factor-investing/config/application.rb:16:in `<top (required)>'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/spring-2.1.1/lib/spring/application.rb:92:in `require'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/spring-2.1.1/lib/spring/application.rb:92:in `preload'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/spring-2.1.1/lib/spring/application.rb:157:in `serve'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/spring-2.1.1/lib/spring/application.rb:145:in `block in run'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/spring-2.1.1/lib/spring/application.rb:139:in `loop'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/spring-2.1.1/lib/spring/application.rb:139:in `run'
	from /Users/victorcosta/.rvm/gems/ruby-2.5.5/gems/spring-2.1.1/lib/spring/application/boot.rb:19:in `<top (required)>'
	from /Users/victorcosta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	from /Users/victorcosta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	from -e:1:in `<main>'