0.3.0 release

• fix #5, getChannel()
• fix KT0803K setChannel()
• fix readData()
• add several KT0803K specific functions (experimental)
  • bool setMono()
  • bool setStereo()
  • bool isStereo()
  • bool setBass(uint8_t bass)
  • uint8_t getBass()
  • bool powerOK()
  • bool silenceDetected()
• update GitHub actions
• update readme.md
• update keywords.txt
• minor edits

0.2.0 release

• Fix #2 frequency to channel formula
• add derived class KT0803K
• add examples
• add parameter checks functions.
• add default frequency + mute to begin()
• update documentation
• update GitHub actions
• minor edits

0.1.0 release

initial version (#1)