fix: update Polygon chain slug from "matic" to "polygon" (#1758) Update the Chain enum value for Polygon from "matic" to "polygon" to align with OpenSea's current API naming conventions. Also add a comprehensive test that iterates through all chains in the Chain enum to verify the getCollections endpoint works for each chain, ensuring future chain additions are automatically tested. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude <noreply@anthropic.com>

fix: remove excludeOptionalCreatorFees parameter, only include requir… …ed fees (#1756) * fix: remove excludeOptionalCreatorFees parameter, only include required fees - Removed excludeOptionalCreatorFees parameter from all order creation methods - Updated getFees() to always filter fees by fee.required field - All orders (listings, offers, collection offers) now only include required fees - Ensures consistent fee behavior across all order types 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> * chore: bump version to 7.3.0 Breaking change: removed excludeOptionalCreatorFees parameter 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> --------- Co-authored-by: Claude <noreply@anthropic.com>

Add unichain to opensea js (#1732) 

add gunzilla (#1726) * add gunzilla * lint * improve

Bump package.json version to 7.1.23 for release (#1721) 

bump package.json version (#1700) * bump package.json version * Update postOrder.spec.ts * Update postOrder.spec.ts * fix

bump package.json version (#1696) 

Update package.json - bump seaport-js version (#1690) * Update package.json - bump seaport-js version * update package-lock

Update package.json to v7.1.19 for release (#1677) 

Release 7.1.18 (#1640)