KLayout

What's new in this version:

Features:
- Enhancement: #2044 Different combination modes on strm2xxx tools (+ and ,)
- Bugfix: #2073 Klayout fails to read CELLNAME S_CELL_OFFSET property on Windows on big files
- Bugfix: #2075 strm2oas ignores def net routing wire extensions
- Bugfix: #2081 strm2oas a.oas,c.oas o.oas coredumps
- Bugfix: #2087 DRC: Poor fill with skew step vectors (see more fill-related topics below)
- Bugfix: #2088 Fixed a use case that generated duplicate OASIS cell IDs
- Bugfix: #2094 Performance issue in the python code to insert Regions into Shapes
- Bugfix: #2100 RNetExtractor extracts wrong RNode locations with tesselation
- Bugfix: #2102 RNetExtractor internal error
- Bugfix: Fixed automatic execution of scripts after package installation
- Now, restarting KLayout after package installation may not be needed
- Bugfix: File watcher dropped file after is was temporarily removed
- Bugfix: After deleting terminals from devices, reading old L2N/LVSDB files
- made these terminal re-appear in the netlist browser.
- Enhancement: primary and secondary device parameters are separated in
- the LVS netlist view, so it is easier to see which parameters are relevant
- Bugfix: Avoid a crash when reading OASIS files with broken code tables
- in OASIS CBLOCKs
- Enhancement: New Ruby/Python functions: Macro#current and Macro attributes
- (Macro#get_attribute, Macro#has_attribute, Macro#set_attribute, Macro#delete_attribute) These features allow passing values in and out from a macro in other ways than defining global variables and basically allow parameterized macros.
- Enhancement: Convenience function ObjectInstPath#cell
- Bugfix: Some layout queries did not render the correct path_dtrans

Bugfix: "tap" feature
- was not selecting shapes that fully overlap the view
- texts are not considered as detecting them requires potentially search a large area

Bugfix: Fixed a TODO from old issue #1470
- Enhancement: DRC function "def_output": A simple yet useful extension to obtain
- the output layout and to manipulate it (within limits)

- Bugfixes and enhancements: fill feature (see also issue #2087)
- tiles in tiled mode most not overlap when the origin is not global as tiles may use different origins
- more efficient computation of remaining fill area
- fill pattern "margin" feature simplifies keeping distance to other fill shapes or original features in multi-fill scenarios
- fixed MT issues when using the fill feature in tiled mode with multiple threads
- better compression of fill cell instances into arrays
- Enhancement: Ruby/Polygon methods set_properties and clear_properties for Cell, Layout, Shape and Instance

- Enhancement: a bunch of features that utilize expressions on polygons and other shapes
- to attach properties, filter base on properties or compute values in properties (aka "measurement features")
- PolygonFilterBase#expression_filter (to be used in Region#filter and Region#filtered) can be used to filter polygons based on KLayout expressions, including properties
- PolygonPropertiesExpressions object (to be used in Region#process and Region#processed) can be used to attach properties based on KLayout expressions, including other properties
- Same for Edges, EdgePairs and Texts

- Enhancement: handling of properties in shape merge in Region
- Region#join_properties_on_merge controls how properties and handled during shape merge
- New respective arguments in Region#merge, Region#merged
- New layer methods "merge_props" and "merged_props" in DRC (allows joining properties from same shapes on different layers)

- Enhancement: net property evaluation using KLayout expressions
- Allows implementing more complex antenna rule checking schemes for example
- Ruby/Python: LayoutToNetlist#evaluate_nets
- DRC: evaluate_nets