Replace boolean with standard bool.

This replaces teh arduino-typedef "boolean" with the standard "bool"
type. The standard type makes sure that the value is always true or
false. Also there is some discussion in arguino itdelf to get rid of
boolean: arduino/Arduino#4673

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>

src/ESPiLight.cpp

@@ -33,7 +33,7 @@ struct protocols_t *protocols = nullptr;
 struct protocols_t *used_protocols = nullptr;
 
 volatile PulseTrain_t ESPiLight::_pulseTrains[RECEIVER_BUFFER_SIZE];
-boolean ESPiLight::_enabledReceiver;
+bool ESPiLight::_enabledReceiver;
 volatile int ESPiLight::_actualPulseTrain = 0;
 int ESPiLight::_avaiablePulseTrain = 0;
 volatile unsigned long ESPiLight::_lastChange =
@@ -192,7 +192,7 @@ void ESPiLight::setPulseTrainCallBack(PulseTrainCallBack rawCallback) {
 
 void ESPiLight::sendPulseTrain(const uint16_t *pulses, int length,
                                int repeats) {
-  // boolean receiverState = _enabledReceiver;
+  // bool receiverState = _enabledReceiver;
   int r = 0, x = 0;
   if (_outputPin >= 0) {
     // disableReceiver()

src/ESPiLight.h

@@ -140,9 +140,9 @@ class ESPiLight {
   /**
    * Internal functions
    */
-  static boolean _enabledReceiver;  // If true, monitoring and decoding is
-                                    // enabled. If false, interruptHandler will
-                                    // return immediately.
+  static bool _enabledReceiver;  // If true, monitoring and decoding is
+                                 // enabled. If false, interruptHandler will
+                                 // return immediately.
   static volatile PulseTrain_t _pulseTrains[];
   static volatile int _actualPulseTrain;
   static int _avaiablePulseTrain;