Upgrade to Rust 2021 Edition.

This change upgrades to the 2021 Edition of Rust and establishes an MSRV
of `1.56.0`. Manifests have been reformatted.

eudoxus/Cargo.toml

@@ -1,13 +1,20 @@
 [package]
 name = "eudoxus"
-description = "Abstraction of Euclidean spaces."
-keywords = ["geometry", "graphics", "math"]
 version = "0.0.1"
 authors = ["Sean Olson <[email protected]>"]
-edition = "2018"
-license = "MIT"
-readme = "../README.md"
+description = "Abstraction of Euclidean spaces."
 repository = "https://github.com/olson-sean-k/theon"
+readme = "../README.md"
+edition = "2021"
+rust-version = "1.56.0"
+license = "MIT"
+keywords = [
+    "geometry",
+    "graphics",
+    "math",
+    "matrix",
+    "vector",
+]
 
 [package.metadata.docs.rs]
 default-target = "x86_64-unknown-linux-gnu"
@@ -22,22 +29,56 @@ rustdoc-args = [
 
 [features]
 default = []
-geometry-cgmath = ["cgmath"]
-geometry-glam = ["glam"]
-geometry-mint = ["mint"]
-geometry-nalgebra = ["nalgebra"]
-geometry-ultraviolet = ["ultraviolet"]
+geometry-cgmath = [
+    "dep:arrayvec",
+    "dep:cgmath",
+]
+geometry-glam = [
+    "dep:arrayvec",
+    "dep:glam",
+]
+geometry-mint = [
+    "dep:arrayvec",
+    "dep:mint",
+]
+geometry-nalgebra = [
+    "dep:arrayvec",
+    "dep:nalgebra",
+]
+geometry-ultraviolet = [
+    "dep:arrayvec",
+    "dep:ultraviolet",
+]
 
 [dependencies]
 num-traits = "^0.2.0"
 typenum = "^1.13.0"
 
+[dependencies.arrayvec]
+version = "^0.7.0"
+optional = true
+
 # Integrations.
-cgmath = { version = "=0.18.0", optional = true }
-glam = { version = "=0.17.1", optional = true }
-mint = { version = "=0.5.6", optional = true }
-nalgebra = { version = "=0.28.0", optional = true }
-ultraviolet = { version = "=0.8.1", optional = true }
+
+[dependencies.cgmath]
+version = "=0.18.0"
+optional = true
+
+[dependencies.glam]
+version = "=0.17.1"
+optional = true
+
+[dependencies.mint]
+version = "=0.5.6"
+optional = true
+
+[dependencies.nalgebra]
+version = "=0.28.0"
+optional = true
+
+[dependencies.ultraviolet]
+version = "=0.8.1"
+optional = true
 
 [dev-dependencies]
 nalgebra = "^0.22.0"

theon/Cargo.toml

@@ -1,13 +1,20 @@
 [package]
 name = "theon"
-description = "Abstraction of Euclidean spaces."
-keywords = ["geometry", "graphics", "math"]
 version = "0.0.1"
 authors = ["Sean Olson <[email protected]>"]
-edition = "2018"
-license = "MIT"
-readme = "../README.md"
+description = "Abstraction of Euclidean spaces."
 repository = "https://github.com/olson-sean-k/theon"
+readme = "../README.md"
+edition = "2021"
+rust-version = "1.56.0"
+license = "MIT"
+keywords = [
+    "geometry",
+    "graphics",
+    "math",
+    "matrix",
+    "vector",
+]
 
 [package.metadata.docs.rs]
 default-target = "x86_64-unknown-linux-gnu"
@@ -25,11 +32,13 @@ geometry-glam = ["eudoxus/geometry-glam"]
 geometry-mint = ["eudoxus/geometry-mint"]
 geometry-nalgebra = ["eudoxus/geometry-nalgebra"]
 geometry-ultraviolet = ["eudoxus/geometry-ultraviolet"]
-lapack = ["ndarray", "ndarray-linalg"]
+lapack = [
+    "dep:ndarray",
+    "dep:ndarray-linalg",
+]
 
 [dependencies]
 approx = "^0.5.0"
-arrayvec = "^0.7.0"
 decorum = "^0.3.0"
 itertools = "^0.10.0"
 num = "^0.3.0"