Merge branch 'fa/no-error-dup-pars' into 'main'

convert error to warning when unknown parameters are found

See merge request !64

src/main.jl

@@ -141,7 +141,7 @@ function load_parameters(parfile)
     def_prms = prms[sec]
     for (k,v) in pairs(u_prms)
       if !haskey(def_prms, k)
-        error("Invalid parameter file: Unsupported parameter found in section [ $sec ]: '$k = $v'. Keep your parameter files clean!")
+        @warn "Unsupported parameter in section [ $sec ]: '$k = $v'."
       end
       def_prms[k] = v
     end