added samd as arch on libraries.properties for xiao m0 support

library.properties

@@ -3,8 +3,8 @@ version=1.0.0
 author=Romulo Silva <contact@midilab.co>
 maintainer=Romulo Silva <contact@midilab.co>
 sentence=BPM clock generator for Arduino and Teensy boards
-paragraph=A Library to implement BPM clock tick calls using hardware interruption. Tested on ATmega168/328, ATmega16u4/32u4, ATmega2560 and Teensy ARM boards.
+paragraph=A Library to implement BPM clock tick calls using hardware interruption. Tested on ATmega168/328, ATmega16u4/32u4, ATmega2560, Teensy ARM boards and Seedstudio XIAO M0 SAMD..
 category=Timing
 url=https://github.com/midilab/uClock
-architectures=avr,arm
+architectures=avr,arm,samd
 includes=uClock.h

src/uClock.cpp

@@ -202,7 +202,6 @@ void uClockClass::setTimerTempo(float bpm)
 		TCCR1B |= tccr;
 	)
 #else
-	ATOMIC(
 	#if defined(TEENSYDUINO)
 		_uclockTimer.update(tick_us_interval);
 	#endif
@@ -210,7 +209,6 @@ void uClockClass::setTimerTempo(float bpm)
 	#if defined(SEEED_XIAO_M0)
 		_uclockTimer.setPeriod(tick_us_interval);
 	#endif
-	)
 #endif
 }