Nef-pipelines

improved sparky assignment parsing which is also refactored into a reusable
library

initial support for RNA and DNA added (only surfaced in the sparky importers)

sparky sequence import including RNA and DNA

sparky peak import fully supported with all fields shown in the spark manual

minor cleanups

shifts make peaks now has test suite

add the ability to rename nef frames

add a verbose option to about [lists os and python versions]

add the ability to suppress assignment height and volume columns in sparky peak export

patches to rpf exporter