* Fixed Date#end_of_quarter to not blow up on May 31st [#289 state:resolved] (Danger)
*2.1.0 (May 31st, 2008)*
* TimeZone#to_s shows offset as GMT instead of UTC, because GMT will be more familiar to end users (see time zone selects used by Windows OS, google.com and yahoo.com.) Reverts [8370] [Geoff Buesing]
# Returns a new Date/DateTime representing the end of the quarter (last day of march, june, september, december; DateTime objects will have time set to 23:59:59)