Summary: HeadsUp adds paid pricing plans

Why It Matters: This shows HeadsUp is moving from free to paid services.

What Changed:

• HeadsUp added "No credit card required" text near the "Start for free" button.
• HeadsUp added a new customer testimonial from Kevin Galang.
• HeadsUp added a new section called "Insights Everywhere You Work" showing many app integrations.
• HeadsUp added new customer testimonials from Nabil Kazi, Elie Steinbock, Cruise Chen, and Jason Erickson.
• HeadsUp changed the "Early Adopter Deal" section to "Try for Free" and added three new paid pricing plans: Starter, Growth, and Pro.
• HeadsUp removed the old "Early Bird Pricing" plan details.
• HeadsUp added "Dashboard sharing" to the Free plan description.
• HeadsUp added "Connect to Slack & Zapier" as a feature description.
• HeadsUp reordered some feature descriptions.