+Changes to Empire 4.2.21 - Tue Jul 5 16:08:46 UTC 2005
+ * Don't let threads block on output to another player thread's
+ socket. Such blocking violates basic design assumptions and can
+ cause all kinds of grief. In particular, it causes player session
+ hangs under Windows with 4.2.20. Broken since the introduction of
+ flash and asynchronous telegram notification many years ago.
+ * Fix deliver not to deliver friendly civilians into occupied
+ sectors.
+ * Threads sleeping until a specified time could return early under
+ Windows. This could cause double-updates.