remove unused imports from sym.py
rewrite the encoding line in sym.py
refactor symfile parser

Also add labels.json generator.

see also: ff1536ddf9c70b9b98c5332c193ad099a103162d
script command scripttalkerafter is an ender

Also, reformat the list of enders for readability and to work better
with diff tools in the future.

see also: 92152c98fc0cd319f5fff1b0e7ee76dc2c0520d2
manually apply crystal.py changes from upstream
jp char ァ

see also: d4e6ccca3b8cf1d5efb851153af8d9dd8c9de1e9
Merge branch 'from-yenatch' into master

These commits (roughly) represent the changes made against extras/ by
yenatch. These are not cherrypicked and this isn't repeatable, sorry.
version bump to: v1.1.0