Fix libshared tests
assert_eq! needs the arguments to be Show-able
Move pandigital tests to where they belong
Use new slice syntax :)
Stop fighting: re-indent everything from 2 to 4 spaces

For the curious: sed -e 's/^\( \{2\}\)\+/&&/g' -i src/*.rs lib/*.rs
Fix instances of odd (no pun indented) indentation