AstroEQ Version 7.0 Release

For improved tracking, AstroEQ now uses either 1/4 stepping or 1/32th
microstepping.
Please download the new config utility to get the new firmware.
This change only applies to DRV8825 chips. If you have an A4988 chip,
you can use the new firmware but it will be no different from 6.8.
If you have legacy hardware, please see the upgrade information.