v0.74.0

Adds

• Post summary now has various length options for excerpts
• Post summaries can have emphasized stats
• Tags now have s-tag__watched and s-tag__ignored variations

Refines

• Gaps between elements in user cards are more consistent, bulletproof
• Better "required" label contrast in dark mode
• Various post summary refinements after community feedback
• Highlighted state on user cards is darkened a bit

Fixes

• Multiple toggle option switches now have focus states
• We weren't importing all the mixins correctly when using Stacks externally