Add footer

.github/copilot-instructions.md

@@ -316,6 +316,10 @@ foot_of_line(P::Point, v::Vector, R::Point) -> Tuple(Point, Float64)
 - Use Markdown for explanations
 - After creating or editing a markdown document always review and fix all linting issues, unless the document is a configuration file of some kind
 - Follow the pattern of existing function documentation in src directory
+- When a new mathematical concept is introduced, add an external link to [MathWorld](https://mathworld.wolfram.com/) for that specific concept.
+  - Compare multiple potential URLs to choose the most appropriate one
+  - Avoid replacing working links with inferior alternatives
+  - Always use fetch_webpage function to check the link is valid and points to the correct concept.
 
 ## Communication Patterns
 

docs/make.jl

@@ -1,5 +1,5 @@
 CI = get(ENV, "CI", nothing) == "true" || get(ENV, "GITHUB_TOKEN", nothing) !== nothing
-using DrWatson, Documenter
+using DrWatson, Documenter, Dates
 using Linear_Algebra
 
 @info "Building Documentation"
@@ -13,8 +13,10 @@ makedocs(;
     format = Documenter.HTML(
         prettyurls = CI,
         edit_link = "main",
-        assets = ["assets/custom.css"]
-    )
+        assets = ["assets/custom.css"],
+        inventory_version = "0.1.0",
+        footer = "Powered by [Documenter.jl](https://documenter.jl) and the [Julia Programming Language](https://julialang.org) generated on $(Dates.format(Dates.now(), "yyyy-mm-dd HH:MM:ss"))"
+    ),
 )
 
 @info "Deploying Documentation"