2.2.0 - Oct 1 2021

This release includes various bugfixes and features from the GitHub community.

There is a new algorithm for handling the nestable tags (such as <get>, <set>, <bot>, and other variable getter/setter tags)
and it works with <call> tags, too! Thanks, @lee-orr! (PR #377)

+ *
- <set value=<call>add_hello <star></call>>
  ^ The answer is: <get value>.

> object add_hello javascript
    return "hello:" + args[0];
< object

• Bugfix: missing 'let' in for loop (#340)
• If an error is raised within an object macro, include the error in the
  bot's response (#341)
• Fix a truthiness check for whether bot/env vars are 'undefined' (#350)
• Fix the _ word wildcard not working when multiple are in the same
  trigger (#356)
• Add example: json-server-async (#207)
• An option to treat user inputs as case-sensitive instead of always
  lowercasing them (#246/#378)
• Various Dependabot dependency updates.