Bug parsing negative numbers and whitespace

[prescod]

trafficstars

- snowfakery_version: 2
- object: foo
  fields:
    a: ${{-1}}
    b: -1
    c: ${{3-4}}

[prescod]

I guess it's working as designed

https://stackoverflow.com/questions/19401106/dashes-in-jinja-templates

The workaround is to put a space before the negative sign.