Possible candidates to add to the Defaults concept:

tzinfo

We should use Defauts.tzinfo as default instead of UTC … That would mean:

• When a job is created without setting tzinfo explicitly, use Defaults.tzinfo
• When calling JobQueue._put() with a naivewhen, usewhen.replace(tzinfo=defaults.tzinfo)
  This would basically not change the current set up, but just put it under the hood
• ProbablyMessage.date and all the friends should also usedefaults.tzinfo, so basically everydatetime instance occuring in the lib.

Arguments of Filters

• Filters.command: allow commandsanywhere in the text or not
• Filters.{user, chat}:allow_empty (only relevant afterAllow updating user_ids/usernames of a running filters.user #1757)

How to make it work: We would need to override those attributes ondispatcher.add_handler somehow. that's pretty much the only time, the filters and the dispatcher can see each other …

Dice.emoji

• Only relevant afterApi 4.8 #1917. Also discussable, if this really is a good idea, as the emoji attribute ofDice is positional and not optional

ReplyKeyboardMarkup

• resize_keyboard
• one_time_keyboard

Redesign ofdefault_quote

Right now,default_quote get's passed from getting updates through all objects, whose attributes have aMessage attribute and is set as attribute inMessage. But as theMessage.reply_* methods only work with a bot anyway, we could just accessMessage.bot.defaults.default_quote.

See#1965