Fork motivation

[fredcwbr]

Had to do a new fork to update the WIP branches that support ATF15XX devices.
My intent here are (for the moment):
1 - Rework on the interface protocol using SLIP to map messaging between the host and programmer . This will enable a memory mapping extending the limited memory (whatever this is) to the host, enabling the use of host memory as a virtual memory. As a side bonus, it simplifies the command level parsing/structure
2 - Rework the VPP / (multiple VPP / VHH / VHHH ) needed for some strange and ackward chips (like PEEL 18V8) , and the dependency of the smart MCP4131/4151 , .. by reworking the STEP-UP piggyback to a different structure (using the TL494) with as a controller, while still maintaining the footprint as close as possible.
3 - Simplify the adjustment/verifying procedure to the extent that is possible; the desired goal is that the procedure has step check on voltage verification with a load so that it zeroes in the same conversion and reference of the proposed new piggyback step-up