Update stylelint-config-standard (#707)
Update stylelint-config-standard (#707)

* Update stylelint-config-standard

When I run 'npm run lint', this warning show up:

Deprecation Warning: 'number-zero-length-no-unit' has been deprecated, and will be removed in '7.0'. Use 'length-zero-no-unit' instead. See: http://stylelint.io/user-guide/rules/length-zero-no-unit/

update package to remove it.

* Update stylelint

to use length-zero-no-unit instead number-zero-length-no-unit.

devonzuegel/cosmocat