Release 0.18.0

What's Changed

• Removed the unwanted character from Python code. by @frankwwu in #1139
• Added Jupyter Lab 4 support by @cdanielw in #1146
• Add support for PMTiles by @giswqs in #1138
• Towards ipyleaflet 0.18.0 by @martinRenou in #1147

New Contributors

• @frankwwu made their first contribution in #1139
• @cdanielw made their first contribution in #1146

Full Changelog: 0.17.4...0.18.0