chore: Remove trailing whitespace (#129)

Switch to the convention of using no trailing whitespace, even on blank lines. Also remove some unintended trailing whitespace on non-blank lines and fix a few typos.

Co-authored-by: Aaron Fenyes <aaron.fenyes@fareycircles.ooo>
Reviewed-on: #129
Reviewed-by: Vectornaut <vectornaut@nobody@nowhere.net>
Co-authored-by: Glen Whitney <glen@studioinfinity.org>
Co-committed-by: Glen Whitney <glen@studioinfinity.org>

README.md

@@ -52,20 +52,20 @@ The latest prototype is in the folder `app-proto`. It includes both a user inter
 1. Use `sh` to run the script `tools/run-examples.sh`.
    - The script is location-independent, so you can do this from anywhere in the dyna3 repository.
    - The call from the top level of the repository is:
-     
+
      ```bash
      sh tools/run-examples.sh
      ```
    - For each example problem, the engine will print the value of the loss function at each optimization step.
    - The first example that prints is the same as the Irisawa hexlet example from the Julia version of the engine prototype. If you go into `engine-proto/gram-test`, launch Julia, and then execute
-     
+
      ```julia
      include("irisawa-hexlet.jl")
      for (step, scaled_loss) in enumerate(history_alt.scaled_loss)
        println(rpad(step-1, 4), " | ", scaled_loss)
      end
      ```
-     
+
      you should see that it prints basically the same loss history until the last few steps, when the lower default precision of the Rust engine really starts to show.
 
 ### Run the automated tests