Refactor vector types (#69)

This is a fairly large SemVer-breaking overhaul of the vector types
provided by this crate which still largel manages to preserve the
original API while dramatically simplifying the implementation.

It removes all usage of `generic-array`. The original intention starting
this refactor was to leverage `min_const_generics` in its place, but it
turns out that const generics really aren't necessary and the previous
usage of `GenericArray` was largely superfluous.

It replaces all previous use of macros with `Vector2d`/`Vector3d` types
which are generic over coordinates. The previous concrete vector structs
such as `I32x2`, `I32x3`, `F32x2`, `F32x3` etc are now implemented as
type aliases for the generic structs.

It also eliminates the `VectorExt` trait as what it provided can be
implemented in terms of trait bounds on the individual methods.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name        = "micromath"
-version     = "1.1.1" # Also update html_root_url in lib.rs when bumping this
+version     = "2.0.0-pre" # Also update html_root_url in lib.rs when bumping this
 description = """
 Embedded-friendly math library featuring fast floating point approximations
 (with small code size) for common arithmetic operations, trigonometry,
@@ -15,15 +15,10 @@ edition     = "2018"
 categories  = ["embedded", "mathematics", "science", "no-std"]
 keywords    = ["math", "quaternions", "statistics", "trigonometry", "vector"]
 
-[dependencies.generic-array]
-version = "0.14"
-optional = true
-default-features = false
-
 [features]
 quaternion = []
 statistics = []
-vector = ["generic-array"]
+vector = []
 
 [package.metadata.docs.rs]
 all-features = true

codecov.yml

@@ -0,0 +1,4 @@
+coverage:
+  status:
+    project: off
+    patch: off

src/lib.rs

@@ -81,7 +81,7 @@
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/tarcieri/micromath/main/img/micromath-sq.png",
-    html_root_url = "https://docs.rs/micromath/1.1.1"
+    html_root_url = "https://docs.rs/micromath/2.0.0-pre"
 )]
 #![forbid(unsafe_code)]
 #![warn(
@@ -110,9 +110,3 @@ pub use crate::f32ext::F32Ext;
 
 #[cfg(feature = "quaternion")]
 pub use crate::quaternion::Quaternion;
-
-#[cfg(feature = "vector")]
-pub use {
-    crate::vector::{Vector, VectorExt},
-    generic_array,
-};