Add optional hardware serial

* Add optional hardware serial when GPIO13(Rx) and GPIO15(Tx) are selected removing hardware serial from GPIO01(Tx) and GPIO03(Rx) (#4288)
 * Bump TasmotaSerial version from 2.1.0 to 2.2.0

lib/TasmotaSerial-2.2.0/library.json

@@ -1,6 +1,6 @@
 {
     "name": "TasmotaSerial",
-    "version": "2.1.0",
+    "version": "2.2.0",
     "keywords": [
       "serial", "io", "TasmotaSerial"
     ],

lib/TasmotaSerial-2.2.0/library.properties

@@ -1,5 +1,5 @@
 name=TasmotaSerial
-version=2.1.0
+version=2.2.0
 author=Theo Arends
 maintainer=Theo Arends <theo@arends.com>
 sentence=Implementation of software serial with hardware serial fallback for ESP8266.

lib/TasmotaSerial-2.2.0/src/TasmotaSerial.cpp

@@ -90,10 +90,12 @@ TasmotaSerial::TasmotaSerial(int receive_pin, int transmit_pin, bool hardware_fa
   m_in_pos = m_out_pos = 0;
   if (hardware_fallback && (((3 == m_rx_pin) && (1 == m_tx_pin)) || ((3 == m_rx_pin) && (-1 == m_tx_pin)) || ((-1 == m_rx_pin) && (1 == m_tx_pin)))) {
     m_hardserial = 1;
-  } else if (hardware_fallback && (((13 == m_rx_pin) && (15 == m_tx_pin)) || ((13 == m_rx_pin) && (-1 == m_tx_pin)) || ((-1 == m_rx_pin) && (15 == m_tx_pin)))) {
+  }
+  else if (hardware_fallback && (((13 == m_rx_pin) && (15 == m_tx_pin)) || ((13 == m_rx_pin) && (-1 == m_tx_pin)) || ((-1 == m_rx_pin) && (15 == m_tx_pin)))) {
     m_hardserial = 1;
     m_hardswap = 1;
-  } else {
+  }
+  else {
     if (m_rx_pin > -1) {
       m_buffer = (uint8_t*)malloc(TM_SERIAL_BUFFER_SIZE);
       if (m_buffer == NULL) return;
@@ -138,7 +140,7 @@ bool TasmotaSerial::begin(long speed, int stop_bits) {
     } else {
       Serial.begin(speed, SERIAL_8N1);
     }
-    if(m_hardswap) {
+    if (m_hardswap) {
       Serial.swap();
     }
   } else {

sonoff/_changelog.ino

@@ -1,6 +1,8 @@
 /* 6.3.0.3 20181105
  * Fix hardware serial pin configuration. To keep using hardware serial swap current Rx/Tx pin configuration only (#4280)
  * Add more strict checks for GPIO selections
+ * Add optional hardware serial when GPIO13(Rx) and GPIO15(Tx) are selected removing hardware serial from GPIO01(Tx) and GPIO03(Rx) (#4288)
+ * Bump TasmotaSerial version from 2.1.0 to 2.2.0
  *
  * 6.3.0.2 20181101
  * Add minutes to commands Timezone to allow all possible world timezones