v4.2.43

Changes since v4.2.41:

• Update screen takes over at download start, with progress and a way back
• Bundled updater installs at first idle, not minutes after boot
• Chop saw: params in two columns under the map; full-size CUT button
• Chop saw: structured cut-list entry; sheet defaults to the table size
• Shop Tools: Chop Saw — nest and cut an order of strips from a sheet
• Drill press: bit + hole diameters, spiral-bore larger holes
• Planer overcut: pure tool-radius cap, drop the overtravel cap
• Planer: allow overcutting the table edge by up to one tool radius