Do a little feature magic to allow to build for web (#83)

* Remove default features

* Enable default features for dev (testing) builds

* Enable WGSL unconditionally

Cargo.toml

@@ -8,11 +8,12 @@ repository = "https://github.com/grovesNL/glyphon"
 license = "MIT OR Apache-2.0 OR Zlib"
 
 [dependencies]
-wgpu = "0.19"
+wgpu = { version = "0.19", default-features = false, features = ["wgsl"] }
 etagere = "0.2.10"
 cosmic-text = "0.10"
 lru = "0.12.1"
 
 [dev-dependencies]
 winit = { version = "0.29.10", features = ["rwh_05"] }
+wgpu = { version = "0.19", default-features = true }
 pollster = "0.3.0"