Consider removing Guava dependecy

[john-h-kastner-aws]

Category

Internal refactors/changes

Describe the feature you'd like to request

We use Guava for a few utility functions, but this pulls in a relativity larger dependency for some functions we could reasonably implement our selves.

When making this change, consider the differences between the builtin unmodifiable sets/maps and Guava's immutable data structures. In particular, the builtin types can be mutated by mutating a reference to the underlying set.

Previously removed in #81, but restored in #83.

Describe alternatives you've considered

.

Additional context

No response

Is this something that you'd be interested in working on?

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change