Lise

* Optimize interprocess synchronization
* Fix some inconsistencies in the rulebook sync
* Crush all of a character's initial state into the one keyframe, fixing integrity problems
* License change; no longer accept later versions of the AGPL
* Support networkx 2.5
* ELiDE changes
* Rule stepper to help you view the state of the game after one rule's run, just before the next
* Don't crash when resuming the game on non-trunk branches
* Fix stats configurator
* Fix rules configurators
* Accept a prefix on the command line
* Grid view shows characters other than the one you started with
* Dialog options from the game itself don't appear more than requested
* Fix crash when laying out one-dimensional boards

* Fix the branch input in ELiDE
* Performance improvements

* Fix a flaw in the keyframes implementation that caused them to overwrite each other when several were made in a single session

* Add support for "keyframes," snapshots of the world state at some specific time. These are currently most useful for supplying the world's initial state by instantiating a Character with a networkx graph, eg. `engine.new_character('new', nx.grid_2d_graph(3, 3))`
* Drastically improved load times for large initial world states
* Removed the would-be world generation API; for now, use [the networkx graph generators](https://networkx.org/documentation/stable/reference/generators.html), and `LiSE.character.grid_2d_8graph`if you want a square grid that's connected at the corners as well as the sides.
* Removed the "sense" feature. It will need a reimagining at some point. In the meantime you can still use `Character.facade()` to get a transient, mutable view onto a `Character` that won't be saved
* `allegedb` is a submodule of `LiSE` now, and will not be published on its own.
* Dropped support for graph types other than `DiGraph`
* Dropped support for Python versions prior to 3.6
* Compatibility with msgpack 1.0.0
* ELiDE changes
* Grid view
* File browser
* Grid generator when starting new simulation
* Symmetrical portals
* New agenda widget, for scheduling things in the future
The stat list on the left of the default ELiDE view is technically a calendar now, where an agenda is a related widget class that offers more flexibility to interface designers.
* Require Kivy 2.0

* Compatibility with networkx 2.4
* Smaller database
* Performance improvements
* Default database filename is now 'world.db', and you can instantiate Engine with no arguments

* Improved documentation.
* Improved performance.
* Prevented the user from trying to start the rules engine while it's already running.
* Minor API changes. clear_world and clear_code are now one option, clear
* Any trigger that's going to run in a given turn is now guaranteed to run prior to any prereq or action. This is mostly to prepare for experiments in parallelism.
* If you branch the timeline while stuff is planned for the future, the plan will be copied to the new branch, unless the plan has not yet started.
* Made facades act more like regular characters. They still aren't very useful... I'm planning to add some new API to them that lets you munge and filter their data lazily