Core traits and structs that are needed for text template evaluation.
Part of rubble-templates library.
## What is this?
This is a part of a template engine.
This engine allows compiling text templates into output text using variable substitution or code evaluation.
This particular crate contains base declarations that are shared between other crates.
To read more about it, refer to [main rubble-templates README](https://github.com/multicatch/rubble-rs/) or [the documentation](https://multicatch.github.io/rubble-rs/rubble_templates_core/).