Pricing, form and share patterns, and a post's own tags

Fantasma 2.1.1 adds pricing, form and share patterns, lists a post's own tags and authors in a Collection, and lets links take any color.

• Added a Forms category of patterns with Contact Split, Member Signup, Sign-in Split and Reader Survey. Read the guide
• Added the Tier Rows and Membership Split pricing patterns, and redesigned Membership Tiers. Read the guide
• Added the Period block, which shows a tier's "/ month" or "/ year" with its own text settings. Read the guide
• Added Post tags and Post authors to the Collection's Source, listing the tags or authors of the post the Collection sits in. Read the guide
• Added the Not the last item condition, which shows a block on every item of a Collection but the last, such as the comma between tags.
• Added the Share Sidebar, Share Footer and Byline Share patterns for posts.
• Added Custom to Link color, which changes only the color and keeps the theme's link weight and hover. Read the guide
• Changed every Tags block into a Collection of the post's tags that looks the same, so you can style each tag and the separator between them.
• Fixed connected AI agents getting a server error on every request. Read the guide

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• Added Free tier text to the Price block, shown in place of a price for the free tier.
• Added a theme toggle beside search to the Logo Left and Minimal header patterns.
• Improved an empty Collection to show the lists it can hold, as an empty section shows patterns.
• Limited a Collection's item to the blocks that repeat with each item, such as data blocks, Group, Paragraph and Button.
• Fixed forms and stacks in templates and layouts made with 2.0 or 2.1.0 staying in place when you change the section's Alignment.
• Fixed feature cards in projects from Fantasma 1 losing their gap, padding and icon spacing, and boxed eyebrows losing their pill shape.
• Fixed the padding of cards in nine built-in card patterns, which 2.1.0 had enlarged.