The Watcher - 1.4.15 - StS2 - v0.107.0

Works on the 'public-beta' branch of Slay the Spire 2 (game version v0.107.0).
Works with BaseLib 3.2.0.

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What's Changed * make card back color more accurate to STS1 by @SpaD-Overolls in #67 ## New Contributors * @SpaD-Overolls made their first contribution in #67 Full Changelog: v1.4.14...v1.4.15