Updated CHANGELOG, added debugging code

CHANGELOG.md

@@ -25,6 +25,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   current working directory. If not, it checks whether it can be reached from the package directory. 
   This makes running simulations easier when Persefone has been installed as a package.
 
+- `simulate()` and `initialise()` now take a `params` keyword argument that can be used to
+  override parameters from other input sources
+
 ### Deprecated
 
 ### Removed

src/core/input.jl

@@ -97,11 +97,14 @@ function preprocessparameters(settings::Dict{String,Any}, defaultoutdir::String)
     end
     # check if input data are present in the working directory or the package directory
     if !isdir(settings["world.mapdirectory"])
+        @warn "$(@param(world.mapdirectory)) not found in current working directory."
         if isdir(abspath(pkgdir(@__MODULE__), settings["world.mapdirectory"]))
             settings["world.mapdirectory"] = abspath(pkgdir(@__MODULE__), settings["world.mapdirectory"])
-            @debug "Using package directory to load map data: $(settings["world.mapdirectory"])".
+            @warn "Using package directory to load maps: $(@param(world.mapdirectory))."
+            #@debug "Using package directory to load map data: $(settings["world.mapdirectory"])".
         else
-            Base.error("Couldn't find map directory $(settings["world.mapdirectory"]).")
+            @warn "Couldn't find maps at $(@param(world.mapdirectory))."
+            #Base.error("Couldn't find map directory $(settings["world.mapdirectory"]).") #FIXME
         end
     end
     if !isdir(settings["crop.cropdirectory"])