Release 2.0.10 with EPUBCheck 5.1.0

• Upgrade EPUBCheck to v5.1.0
• Restored compatibility with newer Java versions
• Internal improvements to the release and code signing process

[Archive] Release 2.0.8

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W3C EPUB-Check 4.2.6

[Archive] Release 2.0.7

Archive upload of old EPUB-Checker releases

[Archive] Release 2.0.6

Archive upload of old EPUB-Checker releases