Open editor at value

Possibility to open bezier curve editor on keys values like:
linear|ease|ease-in|ease-out|ease-in-out|step-start|step-end|steps(int,start|end)
not only in cubic-bezier();

Look at the existing bezier curve editor logic in the CoffeeScript source files, likely in lib/ or src/. Identify where cubic-bezier() values are currently detected and the editor is triggered. Extend that logic to also recognize keywords like linear, ease, ease-in, ease-out, ease-in-out, step-start, step-end, and steps(int,start|end). Test by modifying the package in Atom's dev mode and verifying the editor opens on these new values.

Scritto dal modello di indicizzazione a partire dal testo della issue.