v0.4.0

In this version:

• New command line application by @houfu, resolves #11
• Custom styling by @aaAldinaaa and @houfu
• Updates to docs by @houfu

Much appreciation 👏 to first time contributor @aaAldinaaa and @inteli5 for their assistance in this release.

Your contributions and comments to issues are always welcomed and make it hard for me to ignore this library.