Math formatting bugfixes

[kristerkari]

The previous math formatting fixes broke formatting some properties that were not included in tests.

So this CSS:

.class {
  margin: 0   20px  0 -24px;
  background-position:20% -26px;
  transform-style: preserve-3d;
}

formats before these fixes to:

.class {
  margin: 0 20px 0  - 24px;
  background-position: 20%  - 26px;
  transform-style: preserve - 3d;
}

and after these fixes:

.class {
  margin: 0 20px 0 -24px;
  background-position: 20% -26px;
  transform-style: preserve-3d;
}

I also fixed a bug where / formatting was applied to font shorthand property, breaking the font-size/line-height syntax.

so this property:

.class {
  font: normal normal normal 12px/20px myfont;
}

was formatted to:

.class {
  font: normal normal normal 12px / 20px myfont;
}

Changes:

• Fix a bug with formatting minus signs from negative numbers and property values containing a dash.
• Don’t format “/“ from a font shorthand property.
• Add more test cases for Sass variable formatting to catch formatting bugs

[palashkaria]

I'm running stylefmt 6.0.0, and I an facing an issue which I think should've been fixed by this?

hover-spaced-6-8-light changes to hover-spaced-6 - 8-light

before:

after:

edit: #195 is related