Fast Bevy Dev Build -- all tweaks

fast-bevy-build.diff

diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..f51f913
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,2 @@
+[target.x86_64-apple-darwin]
+rustflags = ["-C", "link-arg=-fuse-ld=/Users/mburr/bin/zld"]
diff --git a/Cargo.toml b/Cargo.toml
index 0d54bf7..50c2f97 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,4 +6,10 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-bevy = "0.8.1"
+bevy = { version = "0.8.1", features = ["dynamic"] }
+
+[profile.dev]
+opt-level = 1
+
+[profile.dev.package."*"]
+opt-level = 3
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..5d56faf
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly"