string formatting for origin info in map plot
fix ZRT/LQT rotations
add channel code to pick label, bboxes for text in axes
fix arrival distance (degrees!) parsed from nonlinloc (km)
refactoring
calculate and add azimuthal gap for events localized with nonlinloc
also add secondary azimuthal gap in nonlinloc events
Qt GUI: no focus for quakeml update button
set P/S phase counts in custom namespace after Nonlinloc run
major refactoring, mostly for consistent picking (esp. for polarities on
picks in ray coordinates)