v0.2.6 Schema evolution bug fixes, Google Colab support, and more datasets

What's Changed

• [C++] Remove unused Reader APIs by @eddyxu in #344
• [Python] fix timezone issue with version timestamp by @changhiskhan in #345
• [C++] add Dataset::Make(string) API by @eddyxu in #346
• [DUCKDB] Native duckdb lance reader by @eddyxu in #347
• [DUCKDB] Read a special version of dataset by @eddyxu in #350
• [DUCKDB] Fix duckdb manylinux build by @eddyxu in #351
• [Python] Add colab badge to notebooks by @eddyxu in #354
• [Notebook] ML dev cycle for DINO by @eddyxu in #355
• [DUCKDB] fix type mapping for other int types by @changhiskhan in #359
• [Python] Fix lance.dataset open local related path by @eddyxu in #365
• [C++] Store relative path for data files by @eddyxu in #368
• [C++] Add RAII util (defer) to auto cleanup / close resources after exiting the scope by @eddyxu in #369
• [Python] Convert of ImageNet 1K into Lance dataset by @eddyxu in #366
• [Python] Imagenet data quality analytics notebook by @eddyxu in #370

Full Changelog: v0.2.5...v0.2.6