Define at least one virtual method in polymorphic class cpp files to
improve link efficiency. Do so by defining a defaulted destructor or
another overridden virtual method in the class cpp file.
Also add explicitly defaulted copy/move constructors and assignment
operators to follow the rule of five and to avoid compiler suppression
of these functions due to the addition of a user-provided destructor.
Where neccessary, create new cpp files and add them to CMakeLists and
Testing.cmake. Set the -Wweak-vtables by default when compiling with
clang to issue warnings for new classes that do not comply with this
pattern.
See http://llvm.org/docs/CodingStandards.html#provide-a-virtual-method-anchor-for-classes-in-headers.
Fixes#6036.
This is a feature/fix to improve notification behavior when we receive
over 3 messages.
SnoreNotify prevents over 3 notifications from being displayed before a
user clears the notification. This is presumably to avoid infinite
notification spam.
Unfortunately this results in the notifications just coming in _after_
the user clears them. This means if there are 100s of messages built up
the user has to clear their notifications N messages / 3 times.
This feature/fix folds all notifications into a single notification
representing the current qTox notification state. See
notificationgenerator_test.cpp for what the new messages look like.
