Pot taper improvements

Made taper function work for reverse log pots and added a config page in a settings dialog for pot tapers

Now includes the Secret Freq filter stage

Includes the Secret Freq filter based on the thread on freestompboxes.org and the Arcana on pedalpcb.com

Different vertical scales

Added support for different vertical scales - currently supports a scale starting at 0dB and another starting at +20dB so the active and resonant circuits can be accommodated without the need for a pad

Ganged pots and active circuits

Have added support for ganged pots and include an Active Circuits mode, currently containing the filter section of the Pearl OD5

Basic mode and print function

Added a mode selection menu which switches between guitar tone stacks and basic circuits (e.g. simple RC) for educational purposes.

File>Print will print the frequency response plot

Circuit panel is now a fixed size so doesn't move about if there are no pots

Fixed bug with wrong pot being hidden when pot 3 not used

NB: Update - have fixed issue with missing QT print dll. The current 1.1.1 archive attached here now includes it but no source code changes, hence not a new release

Load/Save and Snapshot

All config now handled as Json structures - circuits can be saved as Json and when loaded back, simply appear in the circuit select drop down.

Snapshot functionality has also been added and the plot colour can also be changed.

Circuit Save/Load implemented

Major release functionality is load/save. Some new stacks added.

Fixed issues with value edits

Fixed problems with sscanf_s in release config - worked before under debug build but not release

Fix to typo in Vox circuit

Not sure how I managed it but I accidentally deleted the comment marker on a line in the Vox spice circuit - now fixed

Fully functional - can edit all circuit parameters

First fully-functional version - can adjust all circuit elements and source and load resistance. Have added labels to plot axes. To run, simply unzip the release and run tonestack.exe from the "bin" folder.

This is a portable release (no installer) - will add an installer in due course.