Updated README.md to incdicate use of Espressif's IDF v3.2; various other clean-ups

sdkconfig

@@ -2,7 +2,6 @@
 # Automatically generated file; DO NOT EDIT.
 # Espressif IoT Development Framework Configuration
 #
-CONFIG_IDF_TARGET="esp32"
 
 #
 # SDK tool configuration
@@ -11,13 +10,6 @@ CONFIG_TOOLPREFIX="xtensa-esp32-elf-"
 CONFIG_PYTHON="python"
 CONFIG_MAKE_WARN_UNDEFINED_VARIABLES=y
 
-#
-# Application manager
-#
-CONFIG_APP_COMPILE_TIME_DATE=y
-CONFIG_APP_EXCLUDE_PROJECT_VER_VAR=
-CONFIG_APP_EXCLUDE_PROJECT_NAME_VAR=
-
 #
 # Bootloader config
 #
@@ -35,7 +27,6 @@ CONFIG_BOOTLOADER_APP_TEST=
 CONFIG_BOOTLOADER_WDT_ENABLE=y
 CONFIG_BOOTLOADER_WDT_DISABLE_IN_USER_CODE=
 CONFIG_BOOTLOADER_WDT_TIME_MS=9000
-CONFIG_APP_ROLLBACK_ENABLE=
 
 #
 # Security features
@@ -170,7 +161,6 @@ CONFIG_SCAN_DUPLICATE_BY_ADV_DATA_AND_DEVICE_ADDR=
 CONFIG_SCAN_DUPLICATE_TYPE=0
 CONFIG_DUPLICATE_SCAN_CACHE_SIZE=200
 CONFIG_BLE_MESH_SCAN_DUPLICATE_EN=
-CONFIG_BTDM_CONTROLLER_FULL_SCAN_SUPPORTED=
 CONFIG_BLE_ADV_REPORT_FLOW_CONTROL_SUPPORTED=y
 CONFIG_BLE_ADV_REPORT_FLOW_CONTROL_NUM=100
 CONFIG_BLE_ADV_REPORT_DISCARD_THRSHOLD=20
@@ -194,20 +184,9 @@ CONFIG_SPI_MASTER_ISR_IN_IRAM=y
 CONFIG_SPI_SLAVE_IN_IRAM=
 CONFIG_SPI_SLAVE_ISR_IN_IRAM=y
 
-#
-# eFuse Bit Manager
-#
-CONFIG_EFUSE_CUSTOM_TABLE=
-CONFIG_EFUSE_VIRTUAL=
-CONFIG_EFUSE_CODE_SCHEME_COMPAT_NONE=
-CONFIG_EFUSE_CODE_SCHEME_COMPAT_3_4=y
-CONFIG_EFUSE_CODE_SCHEME_COMPAT_REPEAT=
-CONFIG_EFUSE_MAX_BLK_LEN=192
-
 #
 # ESP32-specific
 #
-CONFIG_IDF_TARGET_ESP32=y
 CONFIG_ESP32_DEFAULT_CPU_FREQ_80=y
 CONFIG_ESP32_DEFAULT_CPU_FREQ_160=
 CONFIG_ESP32_DEFAULT_CPU_FREQ_240=
@@ -217,6 +196,10 @@ CONFIG_MEMMAP_TRACEMEM=
 CONFIG_MEMMAP_TRACEMEM_TWOBANKS=
 CONFIG_ESP32_TRAX=
 CONFIG_TRACEMEM_RESERVE_DRAM=0x0
+CONFIG_ESP32_ENABLE_COREDUMP_TO_FLASH=
+CONFIG_ESP32_ENABLE_COREDUMP_TO_UART=
+CONFIG_ESP32_ENABLE_COREDUMP_TO_NONE=y
+CONFIG_ESP32_ENABLE_COREDUMP=
 CONFIG_TWO_UNIVERSAL_MAC_ADDRESS=
 CONFIG_FOUR_UNIVERSAL_MAC_ADDRESS=y
 CONFIG_NUMBER_OF_UNIVERSAL_MAC_ADDRESS=4
@@ -301,16 +284,6 @@ CONFIG_ESP32_WIFI_NVS_ENABLED=y
 CONFIG_ESP32_WIFI_TASK_PINNED_TO_CORE_0=y
 CONFIG_ESP32_WIFI_TASK_PINNED_TO_CORE_1=
 CONFIG_ESP32_WIFI_SOFTAP_BEACON_MAX_LEN=752
-CONFIG_ESP32_WIFI_MGMT_SBUF_NUM=32
-CONFIG_ESP32_WIFI_DEBUG_LOG_ENABLE=y
-CONFIG_ESP32_WIFI_DEBUG_LOG_DEBUG=
-CONFIG_ESP32_WIFI_DEBUG_LOG_VERBOSE=y
-CONFIG_ESP32_WIFI_DEBUG_LOG_MODULE_ALL=
-CONFIG_ESP32_WIFI_DEBUG_LOG_MODULE_WIFI=y
-CONFIG_ESP32_WIFI_DEBUG_LOG_MODULE_COEX=
-CONFIG_ESP32_WIFI_DEBUG_LOG_MODULE_MESH=
-CONFIG_ESP32_WIFI_DEBUG_LOG_SUBMODULE=
-CONFIG_ESP32_WIFI_IRAM_OPT=y
 
 #
 # PHY
@@ -347,20 +320,6 @@ CONFIG_ESP_HTTP_CLIENT_ENABLE_HTTPS=y
 #
 CONFIG_HTTPD_MAX_REQ_HDR_LEN=512
 CONFIG_HTTPD_MAX_URI_LEN=512
-CONFIG_HTTPD_ERR_RESP_NO_DELAY=y
-
-#
-# ESP HTTPS OTA
-#
-CONFIG_OTA_ALLOW_HTTP=
-
-#
-# Core dump
-#
-CONFIG_ESP32_ENABLE_COREDUMP_TO_FLASH=
-CONFIG_ESP32_ENABLE_COREDUMP_TO_UART=
-CONFIG_ESP32_ENABLE_COREDUMP_TO_NONE=y
-CONFIG_ESP32_ENABLE_COREDUMP=
 
 #
 # Ethernet
@@ -452,7 +411,6 @@ CONFIG_FREERTOS_USE_TRACE_FACILITY=
 CONFIG_FREERTOS_GENERATE_RUN_TIME_STATS=
 CONFIG_FREERTOS_DEBUG_INTERNALS=
 CONFIG_FREERTOS_TASK_FUNCTION_WRAPPER=y
-CONFIG_FREERTOS_CHECK_MUTEX_GIVEN_BY_OWNER=y
 
 #
 # Heap memory debugging
@@ -664,11 +622,6 @@ CONFIG_OPENSSL_ASSERT_EXIT=
 CONFIG_ESP32_PTHREAD_TASK_PRIO_DEFAULT=5
 CONFIG_ESP32_PTHREAD_TASK_STACK_SIZE_DEFAULT=3072
 CONFIG_PTHREAD_STACK_MIN=768
-CONFIG_ESP32_DEFAULT_PTHREAD_CORE_NO_AFFINITY=y
-CONFIG_ESP32_DEFAULT_PTHREAD_CORE_0=
-CONFIG_ESP32_DEFAULT_PTHREAD_CORE_1=
-CONFIG_ESP32_PTHREAD_TASK_CORE_DEFAULT=-1
-CONFIG_ESP32_PTHREAD_TASK_NAME_DEFAULT="pthread"
 
 #
 # SPI Flash driver
@@ -676,6 +629,9 @@ CONFIG_ESP32_PTHREAD_TASK_NAME_DEFAULT="pthread"
 CONFIG_SPI_FLASH_VERIFY_WRITE=
 CONFIG_SPI_FLASH_ENABLE_COUNTERS=
 CONFIG_SPI_FLASH_ROM_DRIVER_PATCH=y
+CONFIG_SPI_FLASH_WRITING_DANGEROUS_REGIONS_ABORTS=y
+CONFIG_SPI_FLASH_WRITING_DANGEROUS_REGIONS_FAILS=
+CONFIG_SPI_FLASH_WRITING_DANGEROUS_REGIONS_ALLOWED=
 
 #
 # SPIFFS Configuration
@@ -714,15 +670,6 @@ CONFIG_SPIFFS_TEST_VISUALISATION=
 CONFIG_IP_LOST_TIMER_INTERVAL=120
 CONFIG_TCPIP_LWIP=y
 
-#
-# Unity unit testing library
-#
-CONFIG_UNITY_ENABLE_FLOAT=y
-CONFIG_UNITY_ENABLE_DOUBLE=y
-CONFIG_UNITY_ENABLE_COLOR=
-CONFIG_UNITY_ENABLE_IDF_TEST_RUNNER=y
-CONFIG_UNITY_ENABLE_FIXTURE=
-
 #
 # Virtual file system
 #