* IDF release/v3.3 46b12a560

* fix build

* IDF release/v3.3 367c3c09c

* Update app_httpd.cpp

* Stop LWIP from using PSRAM and enable OV7725

* Update IDF to v3.2 977854975

* Update app_httpd.cpp

* Set IDF to v3.2

* Remove BLE submodule

* Add BLE lib source

* Update Camera example to support OV3660

- ESP-Face to 2937054
- ESP32-Camera to 113629b

* Update IDF to abea9e4c0

* Update esptool

* Enable PSRAM for PICO D4

* Enable APP_ROLLBACK_ENABLE

* Update IDF to e931fe9 and add esp-face

* Fix PIO builds fail because of sketch size

* Fix example build failing for Arduino

* Update IDF to 97eecfa and enable reboot on WDT

* Add API to enable/disable WDT for Core 1 and Arduino Loop

* ESP-IDF da2116f + esp32-camera f8f26ab +BLE b232e7f

* Fix fail compilation due to missing cpp guard

* Update BLE

* Update IDF to afe4c76

* Update CMakeLists.txt

* Update BLE to fix compilation issues

* Update BLE

* Update IDF to a0468b2

* add missing ld file

* Fix PIO builds and change coex policy

* TX Flow Control and Code cleanup

* Use semaphore instead of delay

TX functionality is done.

* Use single buffer and empty queue on exit

* Fix compile issues because of LwIP code relocation

* Add temporary header to fix Azure not compiling

* Fix AsyncUDP early init

* AsyncUDP Multicast fixes

* Add source mac address and rework multicast

* Allow redefinition of default pins for Serials 1 and 2

* Update IDF to 3276a13

* Update esptool.py to 2.5.0

* Fix sketches

* Fix log level in BluetoothSetial

* Add PSRAM init and malloc funtions

* Rebuild IDF libs

* fix sdmmc config

* Fix warnings in EEPROM

from @Curclamas

* remove leftover TAG in EEPROM

* Initial add of @stickbreaker i2c

* Add log_n

* fix warnings when log is off

* i2c code clean up and reorganization

* add flags to interrupt allocator

* fix sdmmc config

* Fix warnings in EEPROM

from @Curclamas

* remove leftover TAG in EEPROM

* fix errors with latest IDF

* fix debug optimization (#1365)

incorrect optimization for debugging tick markers.

* Fix some missing BT header

* Change BTSerial log calls

* Update BLE lib

* Arduino-ESP32 release management scripted (#1515)

* Calculate an absolute path for a custom partitions table (#1452)

* * Arduino-ESP32 release management scripted
(ready-to-merge)

* * secure env for espressif/arduino-esp32

* * build tests enabled
* gitter webhook enabled

* * gitter room link fixed
* better comment

* * filepaths fixed

* BT Serial adjustments

* * don't run sketch builds & tests for tagged builds

* Return false from WiFi.hostByName() if hostname is not resolved

* Free BT Memory when BT is not used

* WIFI_MODE_NULL is not supported anymore

* Select some key examples to build with PlatformIO to save some time

* Update BLE lib

* Fixed BLE lib

* Major WiFi overhaul

- auto reconnect on connection loss now works
- moved to event groups
- some code clean up and procedure optimizations
- new methods to get a more elaborate system ststus

* Add cmake tests to travis

* Add initial AsyncUDP

* Add NetBIOS lib and fix CMake includes

* Add Initial WebServer

* Fix WebServer and examples

* travis not quiting on build fail

* Try different travis build

* Update IDF to aaf1239

* Fix WPS Example

* fix script permission and add some fail tests to sketch builder

* Add missing space in WiFiClient::write(Stream &stream)

* Update BLE lib

* Update IDF to f586f5e

* Restructure Bluetooth Serial includes

* Update esptool and gen_esp32part

* Add partition scheme selection for menuconfig

* Add partition scheme selection for Arduino IDE

* Fix BLE example

* Second attempt BLE fix

* Add exceptions to PIO

* Update mDNS and LEDC

* update toolchain

* Update IDF to 1c3dd23

* Advertise the board variant for Arduino OTA

* Add generic variant definition for mDNS

* Update BLE Library

* Fix SD driver

* Update toolchain

* Update IDF to e5b2c1c

* Update IDF to 9274814

* Fix error in i2c and Arduino

* Update IDF to de750e9

* Add BLE Library submodule

This update also increases BT stack size and enables reboot on exception

* Update IDF to 65acd99

* Update platformio and arduino build paths and libs

* Update esptool binaries

WiFi and BlueTooth can now be started and stopped at will.
basic functions added to esp32-hal to start and stop the BT radio
SimpleBLE class added to show the most basic functionality
Example to show how to switch between BT, WiFi or Both

* Add build time partitions compilation

* Fix wrong definition of SS pin

* Add support for core debug level selection

* update idf libs