0.35.0

This is our last release of the year, and we've got plenty of presents for all of us tiny gophers!
We are happy to show improved error messages, and also a new HTML size report to help figure out what exactly is ending up in that binary.
There are several CGo improvements, such as support for function-like macros.
We've got a whole slew of improvements for reflection and runtime support, alongside several fixes and improvements for WASM.
New hardware! Support for the new RP2350 microcontroller, with the Raspberry Pi Pico2 and Pimoroni Tiny2350 boards.
And we are excited to bring our first software RISC-V running on FPGA to TinyGo with the newly added Tillitis TKey hardware device.

• general
  • update cmsis-svd library
  • use default UART settings in the echo example
  • goenv: also show git hash with custom build of TinyGo
  • goenv: support parsing development versions of Go
  • main: parse extldflags early so we can report the error message
• compiler
  • builder: whitelist temporary directory env var for Clang invocation to fix Windows bug
  • builder: fix cache paths in -size=full output
  • builder: work around incorrectly escaped DWARF paths on Windows (Clang bug)
  • builder: fix wasi-libc path names on Windows with -size=full
  • builder: write HTML size report
  • cgo: support C identifiers only referred to from within macros
  • cgo: support function-like macros
  • cgo: support errno value as second return parameter
  • cgo: add support for #cgo noescape lines
  • compiler: fix bug in interrupt lowering
  • compiler: allow panic directly in defer
  • compiler: fix wasmimport -> wasmexport in error message
  • compiler: support //go:noescape pragma
  • compiler: report error instead of crashing when instantiating a generic function without body
  • interp: align created globals
• standard library
  • machine: modify i2s interface/implementation to better match specification
  • os: implement StartProcess
  • reflect: add Value.Clear
  • reflect: add interface support to NumMethods
  • reflect: fix AssignableTo for named + non-named types
  • reflect: implement CanConvert
  • reflect: handle more cases in Convert
  • reflect: fix Copy of non-pointer array with size > 64bits
  • runtime: don't call sleepTicks with a negative duration
  • runtime: optimize GC scanning (findHead)
  • runtime: move constants into shared package
  • runtime: add runtime.fcntl function for internal/syscall/unix
  • runtime: heapptr only needs to be initialized once
  • runtime: refactor scheduler (this fixes a few bugs with -scheduler=none)
  • runtime: rewrite channel implementation to be smaller and more flexible
  • runtime: use SA_RESTART when registering a signal for os/signal
  • runtime: implement race-free signals using futexes
  • runtime: run deferred functions in Goexit
  • runtime: remove Cond which seems to be unused
  • runtime: properly handle unix read on directory
  • runtime/trace: stub all public methods
  • sync: don't use volatile in Mutex
  • sync: implement WaitGroup using a (pseudo)futex
  • sync: make Cond parallelism-safe
  • syscall: use wasi-libc tables for wasm/js target
• targets
  • mips: fix a bug when scanning the stack
  • nintendoswitch: get this target to compile again
  • rp2350: add support for the new RP2350
  • rp2040/rp2350 : make I2C implementation shared for rp2040/rp2350
  • rp2040/rp2350 : make SPI implementation shared for rp2040/rp2350
  • rp2040/rp2350 : make RNG implementation shared for rp2040/rp2350
  • wasm: revise and simplify wasmtime argument handling
  • wasm: support //go:wasmexport functions after a call to time.Sleep
  • wasm: correctly return from run() in wasm_exec.js
  • wasm: call process.exit() when go.run() returns
  • windows: don't return, exit via exit(0) instead to flush stdout buffer
• boards
  • add support for the Tillitis TKey
  • add support for the Raspberry Pi Pico2 (based on the RP2040)
  • add support for Pimoroni Tiny2350