3.1.0 - Improved touch support, start of i18n support, UI improvements

TcMenu 3.1.0 is a major release including some important features and bug fixes. It includes major changes to the touch support, and will require you to reconfigure any touch plugins. We've tried to default everything as sensibly as possible, but if in doubt check the examples. Note that this requires the designer, tcMenu library, and IoAbstraction be at V3.1.x.

As usual, any issues with this release just rollback to 3.0.x and let us know.

• The rendering of items has been improved in the library
• Support for booleans that display as checkbox
• Lists now have an activated callback as selections change when active
• Helper methods to get/set navigation history
• The severe bug with AdafruitGFX not rendering is fixed
• Major improvements to touch screen support
• It is now possible to use a sized storage for EEPROM
• Ability to provide custom text fields with filtering
• Ability to store any items static data in RAM instead of FLASH

See the main repository for the associated designer: https://github.com/davetcc/tcMenu