Merge pull request #59 from prasant94/develop

More tests for norm
elementPowSum and elementAbsPowSum for dense vectors
elementPowSum and elementAbsPowSum for generic vectors
Merge branch 'develop' of https://github.com/mikera/vectorz.git into develop
misc edits
Add indexed get methods
remove conditional check from indexed get (performance enhancement)
Better randomisation of tests with deterministic seeds
better test values
improve band test coverage
tidy
tests and docs
reciprocalCopy and tests
overrides
overrides for ZeroVector arithmetic operations
ZeroArray equals
Make ZeroArray cache slice values
Rename ABitVector to ABooleanVector
absCopy for JoinedVector
JoinedVector negateCopy