v3.3.0

• WARNING: this release partially breaks the GateType API, please make sure to adjust your code accordingly.
• added user action system to enable recording and reverting actions within the GUI
  • moved most GUI actions to the new user action system, including interactions with the graph view and view management
  • user actions can be recorded and exported as a macro file allowing easier debugging and crash reporting
  • recording of the user actions is automatically dumped on crash
  • users can now revert actions executed within the GUI
• rebuild the settings system from scratch to allow for easier integration of new settings
  • theme setting (and many others) can now be changed during the session
  • added a warning when attempting to assign a keybinding that is already in use
  • added incremental search for settings
  • added setting to enable/disable extra window to list all executed instances from UserAction
• added new Move to module ... dialog
  • allows to create new module or select from existing modules
  • existing modules can be selected from a table, tree-view, or using a module picker within the graph view
  • enables searching for existing modules
  • added cursor to indicate that user is in module pick mode
• added successor / predecessor utilities to gate and module context menu
  • shortest path between two gates can be highlighted or added to current view
  • predecessors or successors can be highlighted or added to the current view up to a user-specified depth
  • different grouping colors can be assigned depending on the distance from the origin
  • common predecessors or successors can be found and added to view
• improved layouter
  • omit repeated layouting during an ongoing activity
  • show progress bar during layouting
  • allow user to abort layouting
  • preserve graph view location of gate when moving it to new module
  • fixed routing errors for complex cable swaps
  • fixed multiple connections of a single net to the same gate not being shown properly
  • fixed incorrect placement of new gates and modules in cone view when navigating starting from a net
• added generic SMT solver interface.
  • added translation from BooleanFunction to SMT-LIB.
  • added BooleanFunction::Node data structure to extend functionality to generic ASTs.
  • added support for z3 and boolector SMT solvers.
  • added cpp-subprocess library to handle communication with SMT solver.
  • added Boost Spirit x3 library to generate grammar-based parser from SMT-LIB models to C++ data structures.
• improved handling of properties for special gate types such as LUTs and FFs.
  • properties that only apply to special gate types have been moved out of the GateType class and into a designated GateTypeComponent
  • added functions to retrieve a gate type's components based on some filter condition
  • added special components dealing with RAM properties
• improved netlist parsers
  • split VHDL and Verilog parsers into two independent plugins
  • netlist parsers now take the path to the netlist file as input instead of a std::stringstream
  • added support for Z and X assignments to Verilog and VHDL parsers
  • added tri as a synonym for wire to the Verilog parser
  • fixed netlist parsers assigning wrong order of inputs for some multi-bit signals
• improved netlist writers
  • netlist writers now take the output path as input instead of a std::stringstream
  • removed broken VHDL writer (will not be supported until further notice)
  • entirely new Verilog writer that respects module hierarchies
  • added GEXF netlist writer, e.g., for netlist analysis within Gephi
• expanded netlist_utils
  • added function get_common_inputs to get inputs that are common across multiple gates
  • added function replace_gate to replace a gate with an instance of another gate type
  • added function get_gate_chain and get_complex_gate_chain to find gates that are arranged in a chain
  • added function get_shortest_path to compute the shortest path between two gates
  • added function get_next_gates to get the predecessors or successors of a gate up to a user-specified depth
  • added function get_partial_netlist to export parts of a netlist as a netlist instance
• dataflow_analysis plugin
  • can now take groups of flip-flops as input that should not be touched during analysis
  • this is meant to aid the dataflow analysis by passing control registeres identified beforehand, which prevents them from being merged into the datapath
• new internal event system
  • binds event handlers to a netlist instance
  • facilitates listening to the events of selected netlists only
• improved search
  • all searchbars now come with options for "Exact Match" and "Case Sensitive" search, as well as a "Clear" button
  • added search icons to the Python editor and the module widget
  • disabled the search filter whenever the searchbar is not visible within a widget
• miscellaneous API changes and additions
  • added function is_top_module to class Module to determine whether a module is the top module
  • added function get_nets to class Module to get all nets that are connected to any of the gates or submodules of a module
  • added functions is_gnd_net and is_vcc_net to class Net to determine whether a net is connected to GND or VCC
  • added functions operator== and operator!= to classes Netlist, Gate, Net, Module, and Endpoint
  • added Python bindings for netlist_serializer
• miscellaneous GUI changes and additions
  • added Save As... option to save .hal files under a different name
  • added Export ... menu to export the netlist using any of the registered netlist writers
  • added Remove from view action to context menu for gates and modules
  • added context menu options to close multiple view tabs at once
  • added an indicator showing whether views have been modified
  • added HAL version number to the info shown in About
  • added Fold parent module option to module context menu
  • when trying to create a view for a module that is already associated with an (unchanged) view, the existing view is activated instead of creating a new view
• bugfixes
  • fixed selection details not being updated immediately when renaming or changing a type
  • fixed navigation bug where ports and nets did not match for modules
  • fixed list of navigation targets containing duplicates and/or loops
  • fixed drag'n'drop bug related to negative coordinates
  • fixed liberty parser aborting on unknown pg_type
  • fixed stylesheets
  • fixed improper handling of GND and VCC nets within the solve_fsm plugin
  • fixed module port names not being freed when reassigned a new name
  • fixed segfault when no VCC or GND gate is present within a netlist