@defragster and all - My update to the last post was not typed correctly - It should have said I needed to change the debug to release in order to get it to build correctly...
Here is a run of on my machine is the HiLow test... Should probably update to what you have now....
So at least some of the basics are there. What I have not tried yet are to configure Arduino to upload using Tycommander and see if it works.
Nor have I configured my machine for example to support MTP + Serial for this device to see if that works in SublimeText.
Not sure how best to allow others to try these. I did mention up on the github issue the steps I took, which included a fresh install of the project, downloading a fresh copy of QT5 static library (from his Readme), I built using the Native 64 bit command prompt. Then go back to main readme and create the build\win64 directory, doing the cmake, opening up solution, try the build (Failed), then changed the build type from debug to release tried building and it worked...
Update: I told the TyCommander to integrate, and then I started Arduino again and rebuilt the hilow, and it was able to upload the program and start again.
Rest Button appear to Reset, bootloader button appears to set into bootload mode and then can program again...
update2: Sublimetext4 in this state is not being able to reset/program it... Need to make sure it works on other boards. Maybe a change I missed making
(Oops needed to update the main TSET to point to this version...)