ATtiny 85 with I2C

Tbot1000:
How do I use your core? Also, keep in mind that the programmer is USBtinyISP.

Install per instructions from github

Make sure you've selected a board definition corresponding to my core. Then you can use wire and existing libraries for i2c devices instead of having to use TinyWireM and do everything without libraries like shown in ChrisTenone's post