update API

src/scgenerator/__init__.py

@@ -7,4 +7,4 @@ from scgenerator.parameter import Parameters
 from scgenerator.physics import fiber, materials, plasma, pulse, units
 from scgenerator.physics.units import PlotRange
 from scgenerator.solver import SimulationResult, integrate, solve43
-from scgenerator.spectra import Propagation, Spectrum
+from scgenerator.spectra import Spectrum, propagation

src/scgenerator/parameter.py

@@ -553,7 +553,7 @@ class Parameters:
         else:
             return first
 
-    def compile(self, exhaustive=False, strict: bool = True) -> Parameters:
+    def compile(self, *, exhaustive=False, strict: bool = True) -> Parameters:
         """
         Computes missing parameters and returns them in a frozen `Parameters` instance