pin diff-lcs only on 1.8.7

JonRowe · JonRowe · commit 351bcd621673 · 2017-01-30T10:58:29.000+11:00
diff --git a/Gemfile b/Gemfile
@@ -48,6 +48,7 @@ gem 'rack-cache', '< 1.3.0' if RUBY_VERSION < '2.0.0'
 
 if RUBY_VERSION < '1.9.2'
   gem 'nokogiri', '~> 1.5.0'
+  gem 'diff-lcs', '< 1.3'
 elsif RUBY_VERSION < '1.9.3'
   gem 'nokogiri', '1.5.2'
 else
