Operators no longer work in most cases

[blowfishpro]

Introduced in #109, merged to master but not yet released

If you have for instance @foo *= 2 then it will no longer parse * as an operator, instead thinking foo * is the entire value name.

Should be possible to fix without reverting the change, but it will require going outside the current regex to parse it (there's only so much complexity regex can capture)