Update token processing
Improve Scalar and Ordinal matching for dates and times
support short-hand year notation
add support for quarter units (i.e. this quarter)
add support for quarters with scalar/repeater/pointer pattern
add support for name quarters
add support for rmn_s_r_p pattern
fix bug handling sm_sd in past context
Merge branch 'quarters' of https://github.com/delighted/chronic into beta
Merge branch 'shorthand-year' of https://github.com/delighted/chronic into beta
Merge branch 'handle-rmn_s_r_p' of https://github.com/delighted/chronic into beta
Merge branch 'fix-past-context-in-sm_sd' of https://github.com/delighted/chronic into beta
Merge branch 'tokenize' of https://github.com/davispuh/chronic into beta