ATtiny85 and MLX90614 cannot read temperature data

Posted code in code tags.

An image of the project, posted.

A schematic, posted.

When you used the I2C scanner was your device detected. Oh wait, did you know there is a sketch to see if a I2C device can be found? My bad in assuming, sorry. Do an internet search using words "arduino i2c scanner" let us know what the scanner reports.