use simds
rm unneeded macro
rm unneeded experimental flag
Derive copy for types that cause compile errors when moved

Now that `Copy` is an opt-in trait there are numerous compile errors
when attempting to move certain values.

This implements `Copy` for the bare minimum of types necessary
to continue compiling cleanly.
Optionally impl. copy where possible

This satisfies all areas where the lint pass shows a type can impl. copy.
Merge pull request #162 from drbawb/fix/copy-instead-of-move

Use `Copy` where moves are illegal
Merge remote-tracking branch 'calvinmetcalf/simd'

Conflicts:
	src/rust-crypto/chacha20.rs
Bump version to 0.1.3
Merge pull request #163 from DaGenix/0.1.3

Bump version to 0.1.3