Adds some docstring to pybind function and some refactors

MANIFEST.in

@@ -1,5 +1,5 @@
 include README.md
-recursive-include cpp/RAT *
+recursive-include cpp *
 prune tests
 prune */__pycache__ 
 global-exclude .git

RATapi/utils/plotting.py

@@ -158,8 +158,7 @@ def plot_ref_sld_helper(
                     layers[-1, 1],  # Bulk Out
                     data.subRoughs[i],  # roughness
                     layer,
-                    len(layer),
-                    1.0,
+                    1,
                 )
 
                 sld_plot.plot(

RATapi/wrappers.py

@@ -66,12 +66,17 @@ def handle(*args):
                 )
                 return np.array(output, "float").tolist()
             else:
-                output, sub_rough = getattr(self.engine, self.function_name)(
+                matlab_args = [
                     np.array(args[0], "float"),  # params
                     np.array(args[1], "float"),  # bulk in
                     np.array(args[2], "float"),  # bulk out
                     float(args[3] + 1),  # contrast
-                    float(-1 if len(args) < 5 else args[4] + 1),  # domain
+                ]
+                if len(args) > 4:
+                    matlab_args.append(float(args[4] + 1))  # domain number
+
+                output, sub_rough = getattr(self.engine, self.function_name)(
+                    *matlab_args,
                     nargout=2,
                 )
                 return np.array(output, "float").tolist(), float(sub_rough)