point2dem: Minor comments
Mention bugfix for point2dem
NEWS: Reword
Add pc_align picture to the docs
point2mesh: Switch to native osgb format for OSGViewer, with compression
stereo: Parse corr-seed-mode from file if not set on cmd line
Tweak docs for release
Tools: geodiff now only operates on the union between inputs.
Settings: Made options code easier to read
Code cleanup