v1.3.1 using float for interval

### Releases v1.3.1

1. Using `float` instead of `ulong` for better interval accuracy

Author: khoih-prog

Diff for: examples/Argument_Complex/Argument_Complex.ino

@@ -47,6 +47,8 @@ volatile pinStruct myOutputPins = { LED_BUILTIN, 0, 1 };
 
 bool TimerHandler(struct repeating_timer *t)
 {
+  (void) t;
+  
   static bool toggle = false;
 
   //timer interrupt toggles pins

Diff for: examples/Argument_None/Argument_None.ino

@@ -50,6 +50,8 @@
 
 bool TimerHandler0(struct repeating_timer *t)
 {
+  (void) t;
+  
   static bool toggle0 = false;
 
 #if (TIMER_INTERRUPT_DEBUG > 0)
@@ -65,6 +67,8 @@ bool TimerHandler0(struct repeating_timer *t)
 
 bool TimerHandler1(struct repeating_timer *t)
 {
+  (void) t;
+  
   static bool toggle1 = false;
 
 #if (TIMER_INTERRUPT_DEBUG > 0)

Diff for: examples/Argument_Simple/Argument_Simple.ino

@@ -44,6 +44,8 @@ RPI_PICO_Timer ITimer2(2);
 
 bool TimerHandler1(struct repeating_timer *t)
 {
+  (void) t;
+  
   static bool toggle1 = false;
 
 #if (TIMER_INTERRUPT_DEBUG > 0)
@@ -61,6 +63,8 @@ bool TimerHandler1(struct repeating_timer *t)
 
 bool TimerHandler2(struct repeating_timer *t)
 {
+  (void) t;
+  
   static bool toggle2 = false;
 
 #if (TIMER_INTERRUPT_DEBUG > 0)

Diff for: examples/Change_Interval/Change_Interval.ino

@@ -52,6 +52,8 @@ volatile uint32_t Timer1Count = 0;
 
 bool TimerHandler0(struct repeating_timer *t)
 { 
+  (void) t;
+  
   static bool toggle0 = false;
 
   // Flag for checking to be sure ISR is working as Serial.print is not OK here in ISR
@@ -70,6 +72,8 @@ bool TimerHandler0(struct repeating_timer *t)
 
 bool TimerHandler1(struct repeating_timer *t)
 { 
+  (void) t;
+  
   static bool toggle1 = false;
 
   // Flag for checking to be sure ISR is working as Serial.print is not OK here in ISR

Diff for: examples/ISR_16_Timers_Array_Complex/ISR_16_Timers_Array_Complex.ino

@@ -80,6 +80,8 @@ RPI_PICO_ISR_Timer ISR_Timer;
 // Never use Serial.print inside this ISR. Will hang the system
 bool TimerHandler(struct repeating_timer *t)
 {
+  (void) t;
+  
   static bool toggle  = false;
   static int timeRun  = 0;
 

Diff for: examples/ISR_Timers_Array_Simple/ISR_Timers_Array_Simple.ino

@@ -60,6 +60,8 @@ volatile uint32_t previousMillis5s = 0;
 
 bool TimerHandler(struct repeating_timer *t)
 {
+  (void) t;
+  
   static bool toggle  = false;
   static int timeRun  = 0;
 

Diff for: examples/RPM_Measure/RPM_Measure.ino

@@ -69,6 +69,8 @@ volatile int debounceCounter;
 
 bool TimerHandler0(struct repeating_timer *t)
 {  
+  (void) t;
+  
   if ( !digitalRead(SWPin) && (debounceCounter >= DEBOUNCING_INTERVAL_MS / TIMER0_INTERVAL_MS ) )
   {
     //min time between pulses has passed

Diff for: examples/SwitchDebounce/SwitchDebounce.ino

@@ -64,6 +64,8 @@ volatile bool SWLongPressed = false;
 
 bool TimerHandler1(struct repeating_timer *t)
 { 
+  (void) t;
+  
   static unsigned int debounceCountSWPressed  = 0;
   static unsigned int debounceCountSWReleased = 0;
 

Diff for: examples/TimerInterruptTest/TimerInterruptTest.ino

@@ -48,6 +48,8 @@
 
 bool TimerHandler0(struct repeating_timer *t)
 { 
+  (void) t;
+  
   static bool toggle0 = false;
   static bool started = false;
 
@@ -70,6 +72,8 @@ bool TimerHandler0(struct repeating_timer *t)
 
 bool TimerHandler1(struct repeating_timer *t)
 { 
+  (void) t;
+  
   static bool toggle1 = false;
   static bool started = false;