Describe exactly why the filter statement exists in the extension

ext/GeometryOpsLibGEOSExt/GeometryOpsLibGEOSExt.jl

@@ -6,6 +6,11 @@ import GeometryOps: GI
 import GeometryOps: GEOS, enforce
 
 using GeometryOps
+# The filter statement is required because in Julia, each module has its own versions of these
+# functions, which serve to evaluate or include code inside the scope of the module.
+# However, if you import those from another module (which you would with `all=true`),
+# that creates an ambiguity which causes a warning during precompile/load time.
+# In order to avoid this, we filter out these special functions.
 for name in filter(!in((:var"#eval", :eval, :var"#include", :include)), names(GeometryOps; all = true))
     @eval using GeometryOps: $name
 end