Bug in Drift class: Decorate track method with clean_slices. Drift changes beam.z .

Increase PyHEADTAIL version to 1.0.2

Author: michuschenk

_version.py

@@ -1,2 +1,2 @@
-__version__ = "1.0.1"
+__version__ = "1.0.2"
 

trackers/simple_long_tracking.py

@@ -103,6 +103,7 @@ def __init__(self, alpha_array, length, shrinkage_p_increment=0):
         self.length = length
         self.shrinkage_p_increment = shrinkage_p_increment
 
+    @clean_slices
     def track(self, beam):
         beta_ratio = 1 - self.shrinkage_p_increment / (beam.gamma**3 * beam.p0)
         beam.z = (beta_ratio * beam.z -