Klayout

* Bugfix: %GITHUB%/issues/733
Relative path resolution in session files fails when the session file's path contains "+" characters
* Enhancement: %GITHUB%/issues/730
Support of class 'QUiLoader' in PYA and RBA
* Bugfix: %GITHUB%/issues/728
Fails to build on Debian hppa: uses non-standard sa_restorer field of struct sigaction
* Bugfix: %GITHUB%/issues/726
Crash on LayoutViewclear_selection on Linux.
* Bugfix: %GITHUB%/issues/723
Backup scheme wasn't working correctly with a single file without path
given as command line argument.

* Enhancement: %GITHUB%/issues/720
"Safe save" and backups: when saving files, the file is only overwritten after
the save terminated successfully. This will avoid loss of data for full volumes
or network share dropouts. In addition, a configurable number of back files can
be kept (see File/Setup: Application/General).
* Bugfix: %GITHUB%/issues/718
GDS export issue fixed (breaking of polygons was filling holes)
* Bugfix: %GITHUB%/issues/709
LVS compare enters infinite loop when it encounters two entirely identical subcircuits
* Bugfix: %GITHUB%/issues/708
Qt binding: missing support for binary strings as QByteArray representative
* Bugfix: %GITHUB%/issues/707
QJsonValue's string constructor is ambiguous
* Bugfix: %GITHUB%/issues/704
Rational Splines not supported DXF
* Bugfix: %GITHUB%/issues/693
MAGIC files won't find subcells when reading from command line
* Bugfix: HTTP stream reading issue with redirect
At least on MacOS a segfault happened when reading HTTP stream data
(e.g. for package manager) from addresses which are redirected.
* Enhancement: Removed %APPDATA% from DLL search path on Windows
This will avoid installation poisoning by the one from %APPDATA%
(which ironically is the default installation path). Eventually
multiple versions can be used in parallel.

* Bugfix: %GITHUB%/issues/658
Menu items were not put into the right place on MacOS.
* Bugfix: %GITHUB%/issues/652
"M" factor scaling was not working for Spice reader.
* Bugfix: %GITHUB%/issues/651
Fixed an issue with DRC "select".
* Bugfix: %GITHUB%/issues/647
Text orientation was not considered properly in search & replace
* Bugfix: %GITHUB%/issues/646
A potential crash was fixed happening when a PCell
library is deleted
* Bugfix: Display bug
Cell placements with small magnification factors (such that the
viewport dimensions exceeded the DBU space when seem from inside
the cell) lead to display errors.

* Enhancement: %GITHUB%/issues/639
A new method is available which enables copying of multiple cells
into a target layout while maintaining common subcells are single
cells.
* Bugfix: %GITHUB%/issues/637
Points have not been selected properly when inside mirrored subcells
in partial edit mode.
* Bugfix: %GITHUB%/issues/629
Qt5 QTimer timeout signal was not available to Python or Ruby.
This also applied to all "private" signals of Qt5. QTimer is just
one important example for this case.
* Bugfix: %GITHUB%/issues/617
A problem with pseudo-const Python/Ruby objects in the netlist API
was fixed.
* Bugfix: %GITHUB%/issues/615
Basic authentication for package manager now uses UTF-8 encoding.
Most servers expect this kind of encoding today. UTF password
characters are supported this way.

* Bugfix: %GITHUB%/issues/381 and more
Some bugs fixed that happened specifically on MacOS.
1.) A segfault that happened in LVS
2.) Some classes were not properly registered for usage in scripts.
* Bugfix: %GITHUB%/issues/493
LVS asserted on MacOS
* Enhancement: %GITHUB%/issues/586
As a safety feature, the stream writers now refuse to write layouts
with cells carrying the same names. Writing such layers would result
in corrupted or invalid layout files.
* Bugfix: %GITHUB%/issues/589 (tentative)
On Anaconda-based builds for MacOS 10.15 (Catalina) a loss of instances
was observed. This could be traced down to compiler/library incompatibilities
but not further.
* Enhancements: %GITHUB%/issues/591
Two enhancements in the macro editor:
1.) A crash happening when adding a new location was fixed
2.) The template selection popup can now be disabled by dismissing the
tip dialog.
* Bugfix: %GITHUB%/issues/592
Reading a file into a layout with unnamed layers caused problems with
layer mapping specs.
* Bugfix: %GITHUB%/issues/596
Library_destroy was crashing the application. As this function must not
be called, it's rerouted to "nothing" for backward compatibility.
* Enhancement: %GITHUB%/issues/603
The "adjust origin" feature now allows specifying the target
coordinates for the adjustment.
* Bugfix: %GITHUB%/issues/610
An internal error happened for certain hierarchical configurations on
netlist extraction.
* Enhancement: LVS netlist compare
The algorithm was improved to provide better reproducibility. The
detection of matching paths in the presence of ambiguities was
improved.
In addition, the netlist compare now favours net names for resolving
ambiguities. So if nets are named the same in the layout and the
schematic, ambiguities are resolved based on these names. This is
usually more efficient. A new function is available to turn this
feature off: "consider_net_names(false)".

* Enhancement: %GITHUB%/issues/522
Skip comment lines with // in RVE DB reader
* Bugfix: %GITHUB%/issues/547
Doc fixes, better error messages on some Shape methods
* Bugfix: %GITHUB%/issues/554
Using 64bit coordinates on RVE reader to avoid overflow
* Bugfix: %GITHUB%/issues/565
Spice reader: .global should not add pin if the signal
isn't used in a subcircuit
* Bugfix: %GITHUB%/issues/568 and %GITHUB%/issues/578
A CIF reader and writer bug was fixed
* Bugfix: %GITHUB%/issues/570 and %GITHUB%/issues/579
Perimenter can be included in antenna area for the
antenna check. This also includes a mode in which only
the perimeter is considered.
* Enhancement: %GITHUB%/issues/560
A library can be associated with multiple technologies now.
* Bugfix: width of cell and library side panels could not be
reduced below the width of the selection boxes in the
header
* Bugfix: cell view selection header text did not get updated
when saving the layout to a different file