Fantastical 2.5 for Mac
Flexibits (John Voorhees, MacRumors):
Fantastical now includes full support for Meetup. Add your Meetup account to Preferences > Accounts and view and respond to your Meetup events directly in Fantastical.
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Open Preferences > Appearance to find a new option to display timed events that span more than one day in the all-day section of the Day and Week views.
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Press the option key when editing the start time of an event to keep the end time the same. You can also select an event in Day or Week view and then press control-option-up/down arrow to adjust the start time of the event. Using control-shift-up/down arrow will adjust the end time instead.
I expect to use these modifier keys a lot.