1.0.3 megaTinyCore - tinyNeoPixel builtin library, UART fixed on x12, x02

This release introduces the new tinyNeoPixel and tinyNeoPixel_Static libraries. These provide support for controlling WS2812 (NeoPixel) LEDs, and work at 8MHz, 10MHz, 16MHz and 20MHz, and work on all supported chips. Be sure to read and understand the tinyNeoPixel Documentation.

This release also fixes Serial (UART) on the ATtiny412/212/402/202 parts - previously incorrect PORTMUX configuration prevented this from working.

The pin numbering issues on the pinout diagrams for 8 and 14 pin parts was also corrected.

This is the version for board manager installation.