CV, VC and CC Transcription

Design changes

• Procedures are used whenever possible to contain behavior within meaningful subroutines. For example, @transcribe_segment(...) checks whether the segment is a vowel and calls either @transcribe_consonant(...) or @transcribe_vowel(...) procedure. The consonant transcription procedure in turn calls @transcribe_cons_manner(...), @transcribe_cons_symbol(...), @transcribe_cons_place_voice(...), and @score_consonant(...).
• Procedures are also used to contain or (hide) related variables in a common namespace. For example, @nwr_trans_textgrid(...) defines all the important variables needed to define and describe the transcription textgrid -- for example, its filepath (locally .filepath$ or globally nwr_trans_textgrid.filepath$).
• Transcription steps are managed by an event loop with 7 nodes: transcribe T1, score T1, transcribe T2, score T2, transcribe prosody, score prosody, and save results.
• Start-up wizard now re-uses code from segmentation start-up.
• Functionality is broken up over multiple files.

Transcription changes

• CV trial type has been generalized so VC and CV trials are now supported.
• Prosody scoring now based on insertion and deletion of segments.
• Diphthongs scored for frontness and backness based on the first vowel.
• /l/ and /r/ added as "voiced" "alveolar" "glides"

Other changes

• Minimum version of praat is now enforced. Praat commands that uses Command... [args] notation have been replaced with the recent Command: [args] notation.
• Multistep transcription wizards (consonants) support a back-button.