New functions and example improvements.

Reduced final code size;
Improved support to ATTiny 84 and 85;
More examples;

• More functions to deal with RDS
• final code size reduction (HEX file)
• error correction
• More examples (see examples folder).

ATtniny84 and ATtiny85 support improved
More examples
Better documentation
Bug fixed.

Improved band functions. Including range from 50 to 65 MHz;
Improved RDS time information function;
Improved LNA support;
More functions.

Added functions to deal with sensitivity

New functions to deal with audio.
More example and improved documentation.
Bug fixed.

Set high impedance audio output, new demodulate method and more

I2S and GPIO setup

Bux fixed, I2S support and more examples