* Fixed persistence woes in SAMD21 boards.
* Disabled persistence in Due. It needs to be revisited.
* Disabled persistence in ESP32. It needs to be revisited.
* Reserved pins 0 and 1 in Due.
* Added support for all MKR series boards.
* Support additional pins in M0.
* Added button hat blocks.
* VM tuning and internal tweaks.
* Updated Catalan and Spanish translations, including translations to some libraries.
* WiFi works on ESP32 now.
* Increase simulated Flash size to 20k on ESP8266 and ESP32.
* Sync scripts after installing a new VM.