• adopt a new terminology for the Atoms, and begin documenting everything in a book
• use a new API to refer to the Atom types via associated types
• compute new errors: illegal subset relation errors, where for example a fn foo<'a, 'b> might require 'a: 'b annotations to be valid.
• more work towards supporting initialization facts and errors
• more work towards defining different phases where each can have its own input facts or produce errors

• add the initialisation-tracking inputs child, path_belongs_to_var, initialized_at, moved_out_at, and path_accessed_at, as well as the new Atom MovePath to the type of AllFacts to capture move paths.
• remove the var_maybe_initialized_on_exit input, as it is now calculated by Polonius.
• remove the region_live_at input fact, as it is now calculated by Polonius.

• add the input var_initialized_on_exit which indicates if a variable may be initialized at a given point and is used to compute drop-liveness.

• Polonius now performs liveness analysis to calculate region_live_at, if it isn't present (#104)
• extend the type of AllFacts and Output with Variable
• new facts: var_defined, var_used, var_drop_used, var_uses_region, and var_drops_region
• Output now has a var_live_at, and a var_drop_live_at field

• update to the latest polonius-engine

• adopt the new datafrog 2.0 dependency (#95)
• some deduplicated dependencies and other improvements (#93, #91, #90)

• adopt the new datafrog 1.0 dependency and optimize with leapfrog joins (#88)

• update to the latest polonius-engine
• update the test parser to add the new facts related to subset errors
• update, deduplicate, and remove some dependencies
• remove --ignore-region-live-at, as the region_live_at is now gone from the inputs and is always calculated!
• add a CLI option --ignore-region-live-at which ignores those facts and recompute them using Polonius even if provided.
• missing region_live_at.facts is no longer an error.
• consistently use the logging crate for error and warning logging.

Add a CLI option --dump-liveness-graph to dump a Graphviz file with a (reduced) liveness-related graph for debugging.

• adopt latest polonius-engine
• extensions to the parser to incorporate syntax for the new facts

• adopt latest polonius-engine

• integrate the latest engine
• add graphviz output
• preliminary work towards a friendly front-end format

polonius-engine

• made default more lenient