1.8.0 Release Candidate One

This is "final" preview for Caldera Forms 1.8.0

🌋 Please used the attached ZIP file to test. 🌋

👀🌋Major Changes:

• New field type -> Advanced File Fields 2.0
• Advanced File Fields 1.0 are deprecated.
• Improved uses of transients for session data to fix performance issues.

👀See milestone for all changes.

🤦‍♀️ Changes since rc.1

• #3008