Additional test cases

Merge pull request #43 from Galaco/dependabot/go_modules/golang.org/x…

…/image-0.5.0

Bump golang.org/x/image from 0.0.0-20210504121937-7319ad40d33e to 0.5.0

Merge pull request #41 from saiko-tech/crc32

implement Bsp.CRC32() - aka CRC_MapFile()

Fixed broken tests

Forced correct sprp lump entry size for v10 staticprops

Bump dependencies

Merge pull request #27 from Galaco/refactor

Refactor

Merge pull request #26 from Galaco/refactor

Support for Leafv0 format in pre-v20 bsps

Additional pakfile improvements

Pakfile search improvements