v1.0.2

-Changed getCO2 to return a char and if sensor is non existent will return NULL
-Changed getPM2 to return a char and if sensor is non existent will return NULL
-Added a new function getPM2_Raw which will return the value of PM2 as an integer
-Added a new function getCO2_Raw which will return the value of CO2 as an integer
-Added 2 new variables in the TMP_Raw Struct:
1. t_Char
2. rh_Char
These variables will be used to store the corresponding values as char and if sensor is nonexistent should be NULL

examples/PM2_Test/PM2_Test.ino

@@ -8,9 +8,9 @@ void setup(){
 
 void loop(){
     
-int PM2 = ag.getPM2();
+int PM2 = ag.getPM2_Raw();
 Serial.print("PM2: ");
-Serial.println(PM2);
+Serial.println(ag.getPM2());
 
 delay(5000);
-}
+}