Update embedded-grappics dependancies (#48)

Updated embedded-graphics-core 0.3 -> 0.4
Updated embedded-graphics 0.7 -> 0.8

Author: StefanBossbaly

rpi-led-matrix/CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Took latest clippy suggestions
 - Link to pure rust rewrite of `rpi-led-matrix`
 - dependabot updates of CI only crates
+- Update `embedded-graphics-core` to `0.4` and `embedded-graphics` to `0.8`
 
 ## [0.4.0] - 2022-01-05
 

rpi-led-matrix/Cargo.toml

@@ -18,11 +18,11 @@ categories = ["embedded"]
 [dependencies]
 libc = "0.2"
 rpi-led-matrix-sys = { version = "0.2", path = "../rpi-led-matrix-sys" }
-embedded-graphics-core = { version = "0.3", optional = true }
+embedded-graphics-core = { version = "0.4", optional = true }
 clap = { version = "3.0", optional = true, features = ["cargo"] }
 
 [dev-dependencies]
-embedded-graphics = "0.7"
+embedded-graphics = "0.8"
 serial_test = "0.8"
 
 [features]