Allow configuration of noEmptyLineBetween.

[Zielak]

Added new config option: no-empty-lines-between-properties, which is passed as noEmptyLineBetween to stylelint-order/rules/properties-order for each group.

Why? Because I couldn't achieve the below results with using this plugin and stylelint's declaration-empty-line-before...

If true properties within group should not have empty lines between them.

With both no-empty-lines-between-properties AND empty-line-between-groups set to true, we can have this code to be autofixed to below:

/* Before: note that "boxModel" group has some empty lines between properties */
a {
  position: relative;
  z-index: 10;

  display: block;
  width: auto;
  
  height: auto;

  margin: 10px;

  padding: 10px;

  color: red;

  background: white;
  border: 1px solid blue;
}

/* After: empty lines are only between groups */
a {
  position: relative;
  z-index: 10;

  display: block;
  width: auto;
  height: auto;
  margin: 10px;
  padding: 10px;

  color: red;

  background: white;
  border: 1px solid blue;
}

Also:

• updated dependencies AND included peerDep fix from @brandonkal's PR fix: use peerDeps (#19) #20
• added tests for this feature
• updated README

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If anyone needs it, I published it on npm: @greenly/stylelint-config-rational-order