Ir esp8266 lib update and code impacts (#235)

* integrate new IRremoteESP8266 lib 2.4.2 and add new protocols

IR_RC6
IR_MITSUBISHI
IR_GICABLE
IR_MITSUBISHI2
IR_LASERTAG
IR_CARRIER_AC
IR_MIDEA
IR_NIKAI
IR_SHERWOOD
IR_DENON
IR_AIWA_RC_T501
IR_JVC

lib/IRremoteESP8266/pylintrc

@@ -0,0 +1,12 @@
+[REPORTS]
+
+# Tells whether to display a full report or only the messages
+reports=no
+
+[FORMAT]
+
+# Maximum number of characters on a single line.
+max-line-length=80
+
+# String used as indentation unit.
+indent-string='  '