* pmtiles js v4: remove pmtiles spec v2 compatibility [#287]
* restructure ts files into src
* add tsup for building ESM/CJS and making types work in ESM
* bump fflate dependency
* update CHANGELOG for js 4.0.0
* Option to load metadata in MapLibre adapter [#247]
* pass metadata: true to new Protocol() to make an extra request and populate attribution + vector_layers
* js 3.2.0 [#247]
* simplify examples
* update leaflet and maplibre versions
* add maplibre_headers.html example for custom headers [#397]
* Remove prefetch boolean from JS sources - no reason to ever not use it
* JS optimization for header fetches on etag invalidation [#90]
* If promises are shared between requests, only the first invalidation makes the header request.
* If promises are not shared, simply delete the key.
* JS 3.0.3 [#90]
* update CHANGELOG
* replace compression-streams-polyfill with globalThis check [#167]
* work around web worker issue with decompression polyfill.
* js 2.10.0-beta.0
* js 2.10.0; update examples
