Enable resolver ver2 (#224)

* Enable resolver ver2

As maybe-async-cfg crate docs suggested

* Updated CHANGELOG.md

* Update CHANGELOG.md

---------

Co-authored-by: Diego Barrios Romero <[email protected]>

Author: akru

CHANGELOG.md

@@ -10,6 +10,7 @@ SSD1306 monochrome OLED display.
 - Update examples
 
 ### Fixed
+- Switch to resolver version 2. This fixes compilation issues when the `async` feature is enabled.
 - Parentheses for expression in mode/terminal.rs (see [precedence](https://rust-lang.github.io/rust-clippy/master/index.html#precedence)) in mode/terminal.rs
 - Switch iterator in `write_str` in mode/terminal.rs  from last() to next_back (see [double_ended_iterator_last](https://rust-lang.github.io/rust-clippy/master/index.html#double_ended_iterator_last))
 - If feature `async` is enabled, the `embedded_hal_async::i2c::I2c`  is used instead of `embedded_hal::i2c::I2c`  so the I2C can be shared

Cargo.toml

@@ -12,6 +12,7 @@ version = "0.9.0"
 edition = "2021"
 exclude = ["build.rs", "build.sh", "memory.x", "doc", "*.jpg", "*.png", "*.bmp"]
 rust-version = "1.75.0"
+resolver = "2"
 
 [package.metadata.docs.rs]
 targets = ["thumbv7m-none-eabi", "thumbv7em-none-eabihf"]