Release v1.5.1

• Persistent notification stopped working (#5/pskiwi)
• Receiver renames not visible (#6/pskiwi)
• Releases also available on GitHub (#4/pskiwi)
• Update project link to GitHub page

Version 1.5.0 (Code 122)

• AVR-Remote is now OpenSource
• Update scanner to detect newer amps such as the X2600H (netmindz)
• Update target SDK version (netmindz)
• Icons updated to Material Icons (pskiwi)
• New Menu-button to access settings (pskiwi)
• Scanner not working on newer Android versions (pskiwi)