Upgrading from 1.7 — nothing you have to do.

• Anonymous usage counts now go to bStats, on by default: Minecraft version, server software, and how many gates, rings, beams and mirrors, in ranges. /wormhole config metrics-enabled false stops it.
• Bundled shapes you have not edited update themselves at startup, keeping the old copy as <name>.shape.old. An edited one is left alone and named in the log.
• The default top dial rests on the top chevron after each lock, so a dial takes about three seconds longer. /wormhole config gate-dial-spin chevron keeps the old pace.
• Optional: add dial-spin: pegasus and dial-spin: universe to an existing config.yml's Atlantis and Universe groups, as new installs have.
• A coded gate whose iris came back open after a crash under 1.7 needs its lever pulled once.
• Coming from 1.7.0? The Massive shape updates itself; then run /wormhole gate regen <gate> on each Massive gate, as 1.7.1 said. From 1.6.0, 1.7.0's step too: command keywords now need a dash.
• Installing for the first time? None of the above applies. Drop the jar in and start.

New

• An animated iris — sweep, spiral, rows or columns — that covers the wormhole instead of replacing it.
• Three more dial-spin patterns: chase, universe and overshoot. A gate or a material group can pick its own pattern and iris style.
• Optional CoreProtect logging of gate and ring construction, so it can be rolled back.
• For other plugins: wormhole open and close events, and a PlaceholderAPI expansion.
• /wormhole lists its commands by job, with a short coloured usage line and more tab completion.

Fixed

• Gate settings are saved as they are set and survive gate regen, so a crash no longer loses them or leaves an iris open.
• Many iris, wormhole and dialling fixes; the full changelog lists them.

Full changelog