Version 0.2.0

Breaking changes

• requires Go 1.21+ (per Go version policy).

API changes

• added getTileFormatAndSize() to attempt to detect the tile size in addition
  to the tile format; will read up to full image of first tile to detect tile
  size.
• added tilesize to MBtiles struct.

Bug fixes

• fixed segfaults resulting from opening invalid MBTiles files (#6)

Version 0.1.0

v0.1.0

Add GetFilename