µCNC v1.4.0-rc

µCNC version 1.4.0 packs lots of new features as well as the initial support for SMT32F4 core MCU's, Trinamic drivers, canned cycles and more.
Release candidate has a few important fixes from version beta2. Also it's possible to compile the project with PlatformIO.

Added

• added platformIO.ini file the µCNC project (#161)

Changed

• improved subsegment planner computations by skipping junction speed calculations after initial calculation for first subsegment (#160)
• optimized the MKS DLC boardmap file to reuse UNO boardmap

Fixed

• fixed random angle error calculation between planner line segments that cause random speed drops (#158)
• fixed compilation errors for main config file options (#159)
• fixed unit vector calculation in motion control line function (#160)