readme edits
add Vector2 complex multiply
fix out of bounds exception messages
extra reshape test
improve abs implementation
scaleAdd overrides
more scaleAdd overrides
general scaleAdd function
Empty int array constant
LongArrays utility functions and empty array constant
misc edits
emploit scaleAdd in operators
final functions
AVectormatrix set with double
elementwise squared sum implementation
elementSquaredSum overrides
array sum tests
tidy
generic toVector()
op specialisation