feat: gm alias for gamma_method also added to other classes.

pyerrors/correlators.py

@@ -124,6 +124,8 @@ class Corr:
                         for j in range(self.N):
                             item[i, j].gamma_method(**kwargs)
 
+    gm = gamma_method
+
     def projected(self, vector_l=None, vector_r=None, normalize=False):
         """We need to project the Correlator with a Vector to get a single value at each timeslice.
 

pyerrors/fits.py

@@ -46,6 +46,8 @@ class Fit_result(Sequence):
         """Apply the gamma method to all fit parameters"""
         [o.gamma_method(**kwargs) for o in self.fit_parameters]
 
+    gm = gamma_method
+
     def __str__(self):
         my_str = 'Goodness of fit:\n'
         if hasattr(self, 'chisquare_by_dof'):