This introduces AsyncFuture as a new base class of AsyncTask. It's modelled after asyncio's Future class, except that it is thread-safe and you can use result() to block the current thread waiting for the future to finish (of course this is not necessary for use with coroutines).
AsyncFuture should be used for any operation that finishes in the future, to get the benefit of awaitability within coroutines as well as a standard interface for querying status and results of the operation as well as cancelling it. As such, it's been implemented in various places, including texture.prepare() and win.trigger_copy().
Note that AsyncFuture is intended to be used *once*; it cannot be used more than once. As an example of how this works, tex.prepare() will return the same future as long as the prepare isn't complete, but when it is done, subsequent calls to tex.prepare() will return a new future.
* Better support for typedefs
* Same code should compile for both 32-bit and 64-bit
* C++11 typed enum support
* Synthesize __setitem__ when operator [] returns reference
* Rewrite coerce system to have better performance
* Change semantics of __getattr__ and __setattr__ to match
Python's, add __getattribute__, __delattr__ and __delitem__
* Improve performance of slot functions a bit more
* Reduce memory overhead of type system
* Some support for wrapping arrays of numeric types
* C++11 character type support in cppparser
* Chars are handled as strings of length 1
* Template functions for CreatePyInstance that use runtime type map
* More functions from dtool as extension functions
* Code cleanup
cxx: Fix missing includes masked by composite builds.
misc: Fix typos in comments.
config: Fix missing config forward-declarations.
direct: Adjust Python imports to panda3d.* instead of pandac.*.
display: Split graphicsWindow out into an extension.
framework: Use if/elif/elif/endif instead of ifdef/elif/elif/endif.
ode: Remove erroneous INLINE declarations.
interval: Fix missing import.
