core13: An Arduino core for the Attiny13 *testers wanted*

gizmoDave:
Ver 16 downloaded, hopefully will have spare time soon to experiment with new code.

I noticed the clock seems to have changed on the last chip I programmed, fuses were burned, and it looked good on the bread board.
Once all the resistors/LEDs were soldered on the clock seems to be running faster by about 30%.

Different power source? Which oscillator?