Tailwind 3 support

[elreco]

border-opacity no longer exists with tailwind 3.

closes #53

[tbordinat]

Nice one !

[m0shiurX]

@kenhyuwa isn't it maintained?

[matthewbecker1990]

@kenhyuwa can you merge this please?

[brandonleichty]

@kenhyuwa - thank you for merging this! Can you also update the NPM package with these changes so it can be installed and used with Tailwind 3? 🙏

[sentiasa]

@kenhyuwa can you please tag the release (1.0.15) so that the npm package is compliant?

I tried npm install "https://github.com/kenhyuwa/litepie-datepicker.git#main" --save but it throws:

node_modules/vite/dist/node/chunks/dep-689425f3.js:40970:10: ERROR: [plugin: vite:dep-scan] Failed to resolve entry for package "litepie-datepicker". The package may have incorrect main/module/exports specified in its package.json: Failed to resolve entry for package "litepie-datepicker". The package may have incorrect main/module/exports specified in its package.json