HTTPS support on Pico!

@Gordon I made the first tests after arrival... but with some error messages. Look at the list... any idea? (I have Pico, shim v2, FW v0.25, your tutorial, only SSID and PSW changed)

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v84.307 Copyright 2016 G.Williams
>echo(0);
=undefined
>save()
=undefined
Erasing Flash.....
Writing..........................
Compressed 81600 bytes to 24247
Checking...
Done!
Running onInit()...
Connecting to WiFi
192.168.20.129
Connecting to Google
Connecting with TLS...
Loading the CA root certificate...
Loading the Client certificate...
Loading the Client Key...
Performing the SSL/TLS handshake...
ERROR: Failed! mbedtls_ssl_handshake returned Not enough memory
ERROR: Failed! mbedtls_ssl_handshake returned -0x6d00
Connecting to Google
Connecting with TLS...
Loading the CA root certificate...
Loading the Client certificate...
Loading the Client Key...
Performing the SSL/TLS handshake...
ERROR: Failed! mbedtls_ssl_handshake returned -0x256a
ERROR: Failed! mbedtls_ssl_handshake returned -0x6d00
Connecting to Google
Connecting with TLS...
Loading the CA root certificate...
Loading the Client certificate...
Loading the Client Key...
Performing the SSL/TLS handshake...
ERROR: Failed! mbedtls_ssl_handshake returned -0x256a
ERROR: Failed! mbedtls_ssl_handshake returned -0x6d00
Connecting to Google
Connecting with TLS...
Loading the CA root certificate...
Loading the Client certificate...
Loading the Client Key...
Performing the SSL/TLS handshake...
ERROR: Failed! mbedtls_ssl_handshake returned -0x256a
ERROR: Failed! mbedtls_ssl_handshake returned -0x6d00
>reset()
=undefined
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v84.307 Copyright 2016 G.Williams
>