Optimisation for browser usage

[ackwell]

The codebase was originally written for server-side usage, though could likely be implemented on the client side as well with a little work. A number of things should be considered:

[ ] Default tag library is a little bulky, and could likely be broken out into a separate package
[ ] Changing function implementation for better compatibility with browser-side loaders

The above will likely introduce breaking changes to the API, so this should likely be considered as part of a version push to v1.0