Klayout

* Enhancement: %GITHUB%/issues/1249 Include expanded/collapsed state of layer properties into session
* Bugfix: %GITHUB%/issues/1265 Issues installing klayout with pip on macOS related to libpng
* Enhancement: %GITHUB%/issues/1271 __version__ attribute in Python modules available now
* Bugfix: %GITHUB%/issues/1287 Goto Position (CRTL+G) is not showing the origin (0,0)
* Bugfix: %GITHUB%/issues/1291 Better compatibility of PyQt5 and KLayout (i.e. debugger does not crash)
* Enhancement: %GITHUB%/issues/1294 Persisting layer properties in sessions
* Bugfix: %GITHUB%/issues/1302 Select filter is not applied in partial mode
* Bugfix: %GITHUB%/issues/1304 Spice netlist reader: should read "M" terminals in DGS order
* Bugfix: %GITHUB%/issues/1309 Incomplete fill (polygon rasterizer issue)
* Bugfix: %GITHUB%/issues/1315 Cannot export layers from Marker Browser in viewer mode
* Bugfix/enhancement: some LEF/DEF parser issues solved with the help of a new complete sample case
* Bugfix: Avoid a segfault while editing a ruler. This happens is both a selection and a transient selection is active.
* Enhancement: Some enhancements for image editing (e.g. selection remains after moving handles)
* Enhancement: klayout.db Python module is auto-loaded for providing stream readers
* Enhancement: Spice reader now supports parametric subcircuits
* Enhancement: Build issue fixed for Qt 5.15.2 bindings
* Enhancement: Including Python's matplotlib into Windows binaries
* Bugfix: Reading fillcell-generated inputs again into DRC deck now also works for deep mode

* Bugfix: %GITHUB%/issues/1275 Region.sized after .smooth returns empty region

* Bugfix: %GITHUB%/issues/1267 Editor options not visible initially on layout view
* Bugfix: %GITHUB%/issues/1260 Internal error on package install
* Bugfix: %GITHUB%/issues/1259 Qt-less LayoutView creates non-editable Layout initially even if editing is requested?
* Bugfix: %GITHUB%/issues/1253 Library browser does not always display all libraries
* Bugfix: %GITHUB%/issues/1237 Python error messages should include more information
* Bugfix: Technology indicator is cleared after last view is closed
* Bugfix: Partial mode did not support Ctrl/Shift to confine movement direction
* Bugfix: Avoid very long error messages in DRC/LVS scripts (listing all details of the engine)
* Bugfix: "clone panel" did not copy custom layer stipples
* Bugfix: Generic "drc" sizing has to use twice the size range to catch all possible interactions
* Bugfix: DRC check (e.g. "sep") against second layer of "raw" type did not work in deep mode
* Bugfix: DRC grid check markers are now exactly aligned with vertexes they are supposed to mark
* Bugfix: DRC interact of polygons with texts was not working properly
* Bugfix: LVS: same_nets with two arguments was not working as described
* Bugfix: py.typed included in Python wheel now.
* Enhancement: New feature: "Screenshot to clipboard"
* Enhancement: Introducing properties in DRC and net tagging by properties
- This enables implementation of "connected" or "unconnected" mode checks
- This is the first release, so the feature is somewhat experimental
- For details check the documentation: look for "DRC Runsets" and browse to "DRC and user properties"

* Bugfix: %GITHUB%/issues/1247 Layer stipples not updated after editing custom stipples with high-DPI displays
* Bugfix: %GITHUB%/issues/1245 Connectivity not preserved when loading/saving technology
* Bugfix: %GITHUB%/issues/1242 KLayout 0.28.2 crashes when registering a plugin if a layout exists
* Bugfix: %GITHUB%/issues/1240 Layer is not activated from layer properties file on first creation
* Bugfix: %GITHUB%/issues/1238 Macro IDE: breakpoints not effective on Windows
* Bugfix: %GITHUB%/issues/1234 "Clone view": layer list is empty
* Enhancement: %GITHUB%/issues/1228 Add option to have Show parameter names on by default
* Enhancement: Improved performance of layer list with many layers
* Bugfix: Restored ability to build with Python 2.7
* Enhancement: Compatibility with Qt 6.4.1

* Bugfix: %GITHUB%/issues/1230 LVS browser crashes

* Bugfix: %GITHUB%/issues/1225 XML error prevents generation of help index
* Bugfix: Python module now has py.typed
* Bugfix: Some segfaults fixed on MacOS, other Linux systems
* Bugfix: dropped Python modules from RPM and DEB packages as this creates conflicts with pip-installed modules
* Bugfix: OASIS reader error with CBLOCK byte counts larger than 4G