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0.5.0
---
- **compiler driver**
- use `wasm-ld` instead of `wasm-ld-8` on macOS
- drop dependency on `llvm-ar`
- fix linker script includes when running outside `TINYGOROOT`
- **compiler**
- switch to LLVM 8
- add support for the Go 1.12 standard library (Go 1.11 is still supported)
- work around lack of escape analysis due to nil checks
- implement casting named structs and pointers to them
- fix int casting to use the source signedness
- fix some bugs around `make([]T, …)` with uncommon index types
- some other optimizations
- support interface asserts in interp for "math/rand" support
- resolve all func value targets at compile time (wasm-only at the moment)
- **cgo**
- improve diagnostics
- implement C `struct`, `union`, and arrays
- fix CGo-related crash in libclang
- implement `C.struct_` types
- **targets**
- all baremetal: pretend to be linux/arm instead of js/wasm
- `avr`: improve `uintptr` support
- `cortexm`: implement memmove intrinsic generated by LLVM
- `cortexm`: use the lld linker instead of `arm-none-eabi-ld`
- `darwin`: use custom syscall package that links to libSystem.dylib
- `microbit`: add blink example
- `samd21`: support I2C1
- `samd21`: machine/atsamd21: correct pad/pin handling when using both UART
and USBCDC interfaces at same time
- `stm32f4discovery`: add support for this board
- `wasm`: support async func values
- `wasm`: improve documentation and add extra example
0.4.1
---
- **compiler**
- fix `objcopy` replacement to include the .data section in the firmware image
- use `llvm-ar-7` on Linux to fix the Docker image
0.4.0
---
- **compiler**
- switch to the hardfloat ABI on ARM, which is more widely used
- avoid a dependency on `objcopy` (`arm-none-eabi-objcopy` etc.)
- fix a bug in `make([]T, n)` where `n` is 64-bits on a 32-bit platform
- adapt to a change in the AVR backend in LLVM 8
- directly support the .uf2 firmware format as used on Adafruit boards
- fix a bug when calling `panic()` at init time outside of the main package
- implement nil checks, which results in a ~5% increase in code size
- inline slice bounds checking, which results in a ~1% decrease in code size
- **targets**
- `samd21`: fix a bug in port B pins
- `samd21`: implement SPI peripheral
- `samd21`: implement ADC peripheral
- `stm32`: fix a bug in timekeeping
- `wasm`: fix a bug in `wasm_exec.js` that caused corruption in linear memory
when running on Node.js.
0.3.0
---
- **compiler**
- remove old `-initinterp` flag
- add support for macOS
- **cgo**
- add support for bool/float/complex types
- **standard library**
- `device/arm`: add support to disable/enable hardware interrupts
- `machine`: add CPU frequency for nrf-based boards
- `syscall`: add support for darwin/amd64
- **targets**
- `circuitplay_express`: add support for this board
- `microbit`: add regular pin constants
- `samd21`: fix time function for goroutine support
- `samd21`: add support for USB-CDC (serial over USB)
- `samd21`: add support for pins in port B
- `samd21`: add support for pullup and pulldown pins
- `wasm`: add support for Safari in example
0.2.0
---
- **command line**
- add version subcommand
- **compiler**
- fix a bug in floating point comparisons with NaN values
- fix a bug when calling `panic` in package initialization code
- add support for comparing `complex64` and `complex128`
- **cgo**
- add support for external globals
- add support for pointers and function pointers
- **standard library**
- `fmt`: initial support, `fmt.Println` works
- `math`: support for most/all functions
- `os`: initial support (only stdin/stdout/stderr)
- `reflect`: initial support
- `syscall`: add support for amd64, arm, and arm64
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