Rakefile in lamby-1.0.2 vs Rakefile in lamby-2.0.0

@@ -1,4 +1,5 @@
+ENV['RUBYOPT'] = '-W:no-deprecated -W:no-experimental'
 require "bundler/gem_tasks"
 require "rake/testtask"
 
 Rake::TestTask.new(:test) do |t|
   t.libs << "test"