Various chores

[YeungOnion]

A few sets of chore commits

• a set of edits to documentation concerning intro to crate, usage, and contrib
• update Cargo.toml to point at correct repo not explicit docs, since all on docs.rs
• update examples, update syntax and link to docs.rs
• first response to this PSA on Rust user forum

[FreezyLemon]

Can I suggest disabling the macros feature in nalgebra?

nalgebra = { version = "0.29", default-features = false, features = ["std", "rand"] }

# or:

[dependencies.nalgebra]
version = "0.29"
default-features = false
features = ["std", "rand"]

It looks like it is unnecessary for statrs and reduces the amount of dependencies & compile time a bit

[YeungOnion]

Considering making all multivariate nalgebra dependencies a feature so it can be opted out of, and I think #209 will only use the macros in tests.

This PR is already non-specific, but mostly related to docs, but the idea is great; I'll call out the mention in #209.

[FreezyLemon]

Thanks! Another small thing, this one might be suited for this PR: The README uses CRLF line endings, which is a bit unexpected because all other files in the project seem to use LF only. Bit of a nitpick, but basically free to fix

[YeungOnion]

reordered commits in hopes to seem a little more organized.
I also missed one of the math texts that was listed as ignore instead of text