minor updates

switch from Travis to GH Actions

switch to ESLint 9+ and NPM instead of Yarn

Fix console.log output in demo code (#241)

Bump word-wrap from 1.2.3 to 1.2.5 (#232)

Bump semver from 6.3.0 to 6.3.1 (#230)

8.0.1

ensure no errors on empty index, close #225

Add typescript section to the README (#224)

update readme

update version in readme

8.0.0

upgrade demo to Leaflet v1.9.3

switch from tape to native node test runner

upgrade dev deps & minor cleanup