v3.0.3

DitherPunk v3.0.3

Diff since v3.0.2

Closed issues:

• Refactor dithering to braille (#83)

Merged pull requests:

• Add compat entries for test dependencies (#90) (@adrhill)
• Replace UnicodePlots dependency with custom braille implementation (#91) (@adrhill)
• Revert default metric to DE_2000 (#92) (@adrhill)
• Use braille strings for reference tests (#93) (@adrhill)