Python: Compact bound methods to one function call

Q: Dark is the void
A: Dark are our souls
Properly insert w/o conflicts
Move a few things around
A bit more comprehensive testing
Python: no return NaN, nicer exception reporting

Q: The Dark One Lingers
A: Come Closer Young Priest
Compute: implement SplitInHCT
Compute: implement DetermineVisibility
Compute: implement DealWithHead
Python: fix equalsNaN

Q: Due to my strong personal convictions
A: I wish to stress that this library in no way endorses a belief in the
occult
Compute: implement ShortenCommonSection
Compute: implement InsertCommonSection