v2.0.0

• AVR Helper extension is using built-in build system which should be compatible with all platforms; make is not required anymore
• avr-gcc, avr-objdump, avr-size, avrdude arguments and source/library folder scanner parameters can be configured in AVR Helper extension settings
• AVR Helper extension can auto-detect avr-size arguments specific to Atmel version
• MCU frequency is made optional
• Various bugfixes