[jhonabreul]

What does this implement/fix? Explain your changes.

Bumps package <Version>, AssemblyVersion/AssemblyFileVersion and the perf-test baseline reference to 2.0.68.

Includes since 2.0.67:

• Fix deadlock when threads first resolve lazy Python members concurrently #154 Fix deadlock when threads first resolve lazy Python members concurrently
• Add GitHub workflow to build and publish the NuGet package #155 Add GitHub workflow to build and publish the NuGet package
• Show an overridden ToString() in the default repr of .NET objects #156 Show an overridden ToString() in the default repr of .NET objects
• Report converter failure causes explicitly instead of through the error indicator #157 Report converter failure causes explicitly instead of through the error indicator

Does this close any currently open issues?

No.

Any other comments?

Since #155 the package is no longer published on merge: after this lands, run the Publish NuGet workflow on master to push 2.0.68 to nuget.org.

Downstream rollout: QuantConnect/Lean#10001, QuantConnect/LeanCloud#1552, QuantConnect/LeanCloud.Services#279 (drafts until 2.0.68 is indexed).

Checklist

Check all those that are applicable and complete.

• Make sure to include one or more tests for your change
• If an enhancement PR, please create docs and at best an example
• Ensure you have signed the .NET Foundation CLA
• Add yourself to AUTHORS
• Updated the CHANGELOG