v0.4.1

Bug Fix

• None as default level for Tile, instead of 0. #355
• Fix Tile's tissue mask in case of a full tissue tile. #360

New Features

• Use BICUBIC for upsampling and LANCZOS for downsampling. #361

Maintenance

• Use http instead of ftp to download TGGATES slide in CI. #352
• Add cache for WSI files. #358

Dependencies

• Support scipy 1.7.3. #356
• Only support scikit-image 0.19.0. #362