v2.1.3

Some bugfixes:

• do not call inspect if mathbox was destroyed Fixes an issue where Mathbox would asynchronously error if instances were destroyed immediately after creation.
• Add a Jupyter Notebook example Note: This currently uses an outdated version of Mathbox.
• Fix sampling bug Fixes a bug where width, height, and depth could be increased but not decreased
• Mathbox has been moved from GitGud to Github. Various CI/Development enhancements:
  • #22, #20, #11