• Added layer to SVG converter. See issue #1.
• Added option to filter mappings by tactic in technique_mappings_to_csv. See pull request #46.

• Clarified documentation on creation of virtual environments for Windows compatibility.
• Added section to install docs about taxii2client compatibility. See issue #19.
• Standardized import style to better follow the standard set in MITRE/CTI#103.

• Added layer to excel converter. See issue #25.

• Updated README to better describe repo contents.
• Removed outdated detection training. See issue #37.

Added scripts used to generate the sample layers in the ATT&CK Navigator repository. See issue #21 and the sample layer README for more details. The following scripts were added:

• heatmap.py
• bear_APT.py
• apt3_apt29_software.py
• software_execution.py

• Fixed a bug in diff_stix where sub-techniques had the wrong URL in hyperlinks.

• New script technique_mappings_to_csv.py added to support mapping Techniques with Mitigations, Groups or Software. The output is a CSV file. Added in PR #23

• Updated diff_stix.py with sub-techniques support. See issue #12.

• Fixed bug in LayerOps causing issues with cross-tactic techniques, as well as a bug where a score lambda could affect the outcome of other lambdas.

• Added Layers folder with utility scripts for working with ATT&CK Navigator Layers. See the Layers README for more details. See issues #2 and #3.

• Added diff_stix.py.

• Added ATT&CKcon 2.0 Detection Training. See the readme for details.

• Added techniques_from_data_source.py.

• Added techniques_data_sources_vis.py.