Cosmetics on paul.base.wave (mainly documentation).
Added doc/paul/ directory, which is now a Sphinx-based directory,
meant to hold lots of auto-generated stuff and some static
documents and guides that should be written :-)
toolbox.arpes: align_stack: seems to be working (testing now, very slow...)
kz-alignment added, with several improvements (multi-pass, fitmode specification etc), and bugs in several plotscripts (including waterfall.pp) fixed