add changes in Particles as_gaussian_linear from kli
TransverseMap objects now know about their injection optics: added get_injection_optics(self) as method.
Merge branch 'oeftiger-min' into rfq
Clean unused code after merge with oeftiger-min
Remove Slicer.__init__ method.
Rename transverse_tracker module -> transverse_tracking for consistency.
Add conformity checks for s to TransverseMap constructor.
Cosmetic changes in detuners module. Docstrings and formulae.
Several bugfixes in SliceMonitor, discovered during testing. Now, all seems to work.
Small bugfix in RFQ class discovered while testing. Now all seems fine.
Cosmetic changes in stats.pyx
Bugfix in ModeIsUniformCharge discovered while testing. Now all seems to be fine.

- TODO concerning lost particles should be moved to particles.py.
Several bugfixes discovered while testing. Now all fine. Simplified Resonator class.