v.3.0

• en_EN package implemented
• allow longer solutions in easy mode
• optimized algorithm
• advanced data-table statistics
• sanitized user name limited to 10 chars
• fixed multiple sound bug
• solution font-size responsive to level solution size
• name is now displayed right after registration without refresh needed
• lvl letters for easy-hard-ro-en-refresh mode stored to prevent cheating
• injection prevention implemented
• sound option on-off is remembered
• userID implemented
• changed game slug to 3books