v1.3.0: Cool running using WFE

Full Changelog: v1.2.0...v1.3.0

The big change here was the addition of the WFE instruction in the loop that's waiting for the cycle synchronization. This one change reduced the operating temperature from ~80ºC (at 266Mhz) to around 33ºC (at 366Mhz).

Also:

• Updated documentation
• Added download button to web interface
• Improved consistency through load, map clear, and config.
• Allowed changing core voltage from the make command line
• Changed core voltage default from 1.15 to 1.30V
• Removed references to CMOS memory from docs and code (CMOS memory is no longer persistent, and its contents are read from the system CMOS memory at startup and thus not touched).