Read hash-params on attach as well as visible

Merge pull request #72 from plumelo/feature/pre-render_bug

(minor) read location hash once when cosmoz-tabs is attached

Tabs state propagation

(minor) read location hash only when cosmoz-tabs becomes visible

Fixes Neovici/cosmoz-frontend#1047

### tests:
* use an iron-collapse element to test for hash param behavior during visibility changes
* specify expected behavior when `hash-param` is changed

v2.0.1

• cosmoz-page-router => 2.0.0
• Updated to class style
• cosmoz-templatizer removed

v2.0.0

• Updated to Polymer 2.x

Prevent max call stack for mobile/accordion

Pre-render tabs in accordion mode

typo


Don't update fallback selection in accordion mode


Update pkgs


Prevent selecting fallback on invalid selection when the fallback is already selected

v1.2.1 - Animation fallback fix

Make sure we handle the lack of transitions

v1.2.0 - templating

Merge pull request #50 from plumelo/feature/NEOV-198-template-support

Cosmoz tabbed template behavior

v1.1.1

CSS-based animation

Drop iron-collapse

v1.1.0

New badge

Drop paper-badge for css solution

v1.0.2

• Documentation
• codeclimat fixes