v4.5.7 - Constituency to Dependency Converter Upgrades

UD converter upgrades

Inspired by UniversalDependencies/docs#717, although the work is not finished

• Add an option to use the PTBCorrector, which fixes many (although not all) incorrect POS tags 5e57eab
• Treat sort of the same as kind of bc4acf1
• en masse is flat cb338cd
• dinna is an MWT 1dd746c
• Use AUX as the POS in the converter when appropriate 30f2f8e
• Fix (heh) all but and whether or not 2513676
• Dependency dep -> ccomp for fronted say verbs a76a854

Parser evaluation improvements

• Include the F1 scores of each tree when scoring a constituency dataset 2725b06