lib/lingo/{show_ -> }progress.rb: Renamed and refactored.
lib/lingo/language/grammar.rb (test_compound): Don't sort lexicals.
lib/lingo/language/word.rb (add_lexicals): Don't sort lexicals.
lib/lingo/language/word.rb (lexicals=): Don't sort lexicals.
lib/lingo/language/word.rb (<<): Fix variables.
lib/lingo/call.rb (talk): Inline sort.
lib/lingo/language/grammar.rb (find_compound): Record "head" lexical.
lib/lingo/database.rb ([]=), lib/lingo/language/dictionary.rb (select), lib/lingo/language/lexical_hash.rb ([]): Don't sort dictionary values.
lib/lingo/database/source/word_class.rb: Support encoding of compound parts.
lib/lingo/attendee/vector_filter.rb: Learned dictionary output.