Update code according to latest spec.

[laserpants]

No description provided.

[laserpants]

@4kimov: This is now up-to-date with the latest version of the spec., including the tests. I'd appreciate it if you could have a quick look.

✨ I have also added Big Int support, as explained in the README file: ✨

The library exposes two versions of the API;

• Web.Sqids relies on Haskell's Int data type, whereas
• Web.Sqids.Integer uses Integers, which support arbitrarily large integers.

If you need to work with (i.e., encode and decode) large numbers, it is recommended to choose the latter option, in which case you would import the library as:

import Web.Sqids.Integer

The Haskell standard (see here) guarantees the range supported by Int to have an upper bound of at least 229 - 1 (= 536,870,911). If this does not present a problem for your use case, instead use:

import Web.Sqids

The code snippets on the web site are still correct.

[4kimov]

@laserpants Very nice, good job. And even Bit Int support! 💪