• Prevent changing the name of net 0 when generating a SPICE netlist.
• Fixed Pin, Net, Bus and Part iterators so they'll work in nested loops.
• Part units are automatically added when a part is parsed.
• Files are now opened for reading using latin_1 encoding to allow special symbols used by KiCad.
• Part pins can now be aliased directly, e.g. uc[5].aliases += 'gp0'.
• Added class method get() to Part to allow finding a part based on name, reference, description.
• Refactored ERC functions to allow user-extensibility.
• Created a base object for Circuit, Part, Pin, Net, and Bus objects.
• Added an aliases property to the SKiDL base object so all its children could be aliased.
• Updated to perform simulations with ngspice version 30.
• Added a notes property to allow attachment of user notes to Parts, Pins, Nets, etc.
• Added net class to net objects for specifying net-specific design rules in PCBNEW.
• Ignore multiple pins with the same number in symbols with DeMorgan equivalents.
• Fixed problem with non-ASCII chars (e.g. Ohms) in strings.
• Sped-up part/net naming using heap/cache, binary search, sets.
• Sped-up by storing net traversals to avoid recomputation.
• Fixed processing of slices in things like sdram['A[0:15]'].
• Sped-up part_search() by eliminating unnecessary part parsing.
• Improved schematic generation with graphviz.
• Search now allows AND/OR of parenthesized terms.
• New GUI for searching for parts and footprints.
• Footprint libraries to search are now selected from the global fp-lib-table file.
• KiCad library component field values are now stored in a dict in Part indexed by the field name or F0, F1, F2...
• KiCad library component field values are also stored as Part attributes using the field name or F0, F1, F2...
• Added p and n attributes to Part object to permit explicit reference to pin numbers or names.