allows to grow in width for labels with four or more characters

[renfeng]

It helps to solve problems like this, PolymerEl/paper-tags#28

[e111077]

This is technically a breaking change; it would also break a lot of visual diff tests. Perhaps have a flag / property that you can set that will set a class on the element so that it can conditionally switch to this behavior

[e111077]

Please reopen when requested changes are made

[renfeng]

What were the changes requested?

[e111077]

Can this feature be hidden behind a flag e.g.

<style>
  .badge.grow { min-width: var(--paper-badge-width, 20px); }
  .badge.nogrow { width: var(--paper-badge-width, 20px); }
</style>
...
<div class$="badge [[__badgeClass(grow)]]">
...
<script>
Polymer({
  properties: { grow: { type: boolean, value: false }, ... }
  __badgeClass(shouldGrow) { return shouldGrow ? 'grow' : 'nogrow'; },
  ...
})
</script>

but with better variable / fn names...