Added voicing to phone types.
Expanded use of Forwardable.
Added method to determine if a phone is of a certain articulation.
Added an English rule for triplet onsets.
Added pry to the Gemfile in case it's needed.
Added requires for running spec files individually.
Added intention revealing method for approximants.
Fixed triplet onset rule to mark first element as starting a syllable.
Supported /s/ doublet as well as triplet onsets.