cells - a language server for CEL

This weekend, I built a language server for CEL called cells. It currently supports semantic highlighting, diagnostics, documentation on hover, signature help, references, document highlighting (for variable references), completion, and formatting. CEL is a pretty simple language, so a language server for it doesn’t really need to support things like go to definition or some of the other niceties that language servers typically support. It only works on a single .cel file at a time, which is ...