Consider updating the GCC version

[ghent360]

ARM has released v8 2018-q4 of the embedded compiler. Would you consider updating the GCC version?

Is this something you host or is it coming from the Arduino folks?

[fpistm]

This is something I host.
I've plan to update it, one day. I update it when this is required to fix an issue or to support a required feature. I've updated to v6 to support arm cortex7. Anyway' I could update it soon as I know newlib has been update and fix somes possible issues. This also allow to reduce a bit the code size.
https://github.com/stm32duino/arm-none-eabi-gcc

[fpistm]

@ghent360
I've released all the packages for 8-2018-q4-major:
https://github.com/stm32duino/arm-none-eabi-gcc/releases/tag/8-2018-q4-major

Note that all toolchains have been rebuild due to patches required (mainly for windows).

[fpistm]

Master use now the latest arm non eabi gcc toolchains:
stm32duino/Arduino_Core_STM32#491
Will be available in 1.6.0.