Fix error when using C++ virtual methods

 * Include extralibs by default

2. Delay and don't clear halt request when unbricking.

Add Readme and graphs w/cleanups

 * Make debugger only go after commanded to do so.

Add hsitrim example

Added zicsr arch option. Closes #89

Fix restarting vscode debugger

Fixes restarting the debugger as the deploySteps get run every time instead of just once.

old read mode for v307 targets

with better target detect

Update Systick example README and remove redundant Systick millis example

Update systick examples to reflect new sysclk usage.

 * Revert `del /Q /F` windows mod.

Minor build improvements

Initially Windows-only.