resolves #3336 fix how options are passed to the Rouge lexer (PR #3339)

* restore compatibility with Rouge >= 3.4
* eagerly instantiate lexer if not using find_fancy
* pass options to constructor of Rouge lexer instead of #lex method
* don't clobber cgi-style options on language when enabling start_inline option on the Rouge PHP lexer
* add tests for passing options to the Rouge lexer
* upgrade Rouge to 3.4.0 (for development); also test against Rouge 2.0.7 in CI

1 files changed, 1 insertions, 0 deletions

diff --git a/Gemfile b/Gemfile
index 2cabd9d0..ecffc678 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,6 +5,7 @@ gemspec
 
 group :development do
   gem 'pygments.rb', ENV['PYGMENTS_VERSION'] if ENV.key? 'PYGMENTS_VERSION'
+  gem 'rouge', ENV['ROUGE_VERSION'] if ENV.key? 'ROUGE_VERSION'
 end
 
 group :doc do