spline_fit import in module

wetb/signal/fit/__init__.py

@@ -4,5 +4,6 @@ d = dir()
 from wetb.signal.fit._linear_fit import *
 from wetb.signal.fit._bin_fit import *
 from wetb.signal.fit._fourier_fit import *
+from wetb.signal.fit._spline_fit import *
 
 __all__ = sorted([m for m in set(dir()) - set(d)])