Fix Lastfm::Util.build_options_from_hash to properly check for required params when using Lastfm::AnyParams
Fix Lastfm::Util.build_options_from_hash to properly check for required params when using Lastfm::AnyParams

ShanaLMoore/ruby-lastfm,Bopster/ruby-lastfm,youpy/ruby-lastfm,jjgh/ruby-lastfm,volontarian/ruby-lastfm,alexis779/ruby-lastfm