fix: allow `$ref` pointers to point to a `null` value (#374)

* fix: allow `$ref` pointers to point to a `null` value

* fix: removing a `.only()` test designation

* fix: pr feedback

fix: `http.timeout` default does not match the documentation (#373)

* fix: `http.timeout` default does not match the documentation

* fix: changing the default in the docs to match what the default is

fix: incorrect argument name (#371)

feat: `dereference.preservedProperties` for preserving data during de…

…referencing (#369)

* feat: `dereference.preservedProperties` for preserving data during dereferencing

* fix: typo

* fix: wrapping logic in a conditional

fix(lints): fix lints and unused params

chore(deps): bump deps

feat: creation of a new `onCircular` hook for accumulating circular r…

…efs (#366)

* feat: creation of a new `onCircular` hook for accumulating circular refs

* fix: removing a test `.only`

fix: release missing pointer error message improvements (#361)

Signed-off-by: Dan Hudlow <dhudlow@us.ibm.com>

fix: dont cache on circular references to prevent overwriting externa…

…l ref resolutions

fix: remove exports test