What is new in WinBoard / XBoard 4.7.2?

Bugfix release for version 4.7.1

• Make PGN parser immune to unprotected time stamps
• Fix book creation
• Fix GUI book after setup position
• Allow drops / promotions/ deferrals to be edited into book
• Allow entry of negative numbers in spin control (WB)
• Fix grabbing of selected piece
• Fix initial board sizing WB
• Fix -zippyVariants option