Added NEC2 protocol. Improved Magiquest protocol. Added function sendPulseDistanceWidth().
- Improved documentation with the help of [ElectronicsArchiver}(https://github.com/ElectronicsArchiver).
- Added NEC2 protocol.
- Improved Magiquest protocol.
- Renamed sendSamsungRepeat() to sendSamsungLGRepeat().
- Added function sendPulseDistanceWidth().
- Improved repeat detection for some protocols.