Release v1.13.0

[pattonwebz]

Steve Jones (1):

• [x] Rule Viewable

William Patton (12):

• [x] Add error for zoom disabled via viewport meta tag
• [x] Convert text_justified rule to a JS rule
• [x] Enable the blinks and marquee axe-core rules to power the text_blinking_scrolling rule
• [x] Convert the text_small rule to JS check
• [x] Add a rule and check for empty paragraphs
• [x] Check possible_heading rule with computedStyles
• [x] Integration branch for all recent rule changes
• [x] Check for typeof 'number' instead of instanceof Number
• [x] Update the zooming and scaling user facing title and the help link
• [x] Remove the dry run flag in the deploy-on-release-to-dot-org.yml workflow
• [x] Don't flag missing iframe title if it's display: none and visibility: hidden