v3.0.1 - PCECD MiSTer save sync fix & misc speedups

What's Changed

• Fix PCECD MiSTer save lookup by @neil-morrison44 in #97
• Switch to using CRC32 for most hashing things by @neil-morrison44 in #98

Full Changelog: v3.0.0...v3.0.1

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Quick links:

• Mac: Pocket.Sync_universal.app.tar.gz
• Linux (also available via Flatpak): pocket-sync_3.0.1_amd64.AppImage
• Windows: Pocket.Sync_3.0.1_x64_en-US.msi