Drop coverage stats for sources outside of technic directory (technic_cnc, technic_worldgen) Update technic API functions for tests (were exported just for tests, now part of API) Move CNC tests, use shared fixtures for tests
* Extended Mineunit tests * Tests for Technic CNC * Test node placement for all listed nodes * Test cable plate placement
* CNC Mk2 * Formspec protection, mk2 textures, more digiline commands, fix digging * Documentation, adjust formspec, add tests, adjust API and digilines * Fix CLU and filter injectors, add few interaction tests * Upgrade machines, adjust formspecs and textures, add few tests * Adjust formspec, do check protection for quit event * Remove unnecessary real_coordinates
