Intake-erddap

What's Changed
* Update release.yaml by kthyng in https://github.com/axiom-data-science/intake-erddap/pull/57
* Update whats_new.md by kthyng in https://github.com/axiom-data-science/intake-erddap/pull/58


**Full Changelog**: https://github.com/axiom-data-science/intake-erddap/compare/v0.5.0...v0.5.2

Updated PyPI release info.

What's Changed
* Update intake to v2 by kthyng in https://github.com/axiom-data-science/intake-erddap/pull/56
* This required quite a bit of help from martindurant — thank you!
* Major changes across the codebase to update to intake v2! Also updated class names; updated tests; updated docs.
* Now can choose variables to narrow results to.
* Fixed some bugs.


**Full Changelog**: https://github.com/axiom-data-science/intake-erddap/compare/v0.4.0...v0.5.0

What's Changed
* updated simplecache syntax by kthyng in https://github.com/axiom-data-science/intake-erddap/pull/55


**Full Changelog**: https://github.com/axiom-data-science/intake-erddap/compare/v0.3.1...v0.4.0

What's Changed
* small fix to "dropna" optional functionality by kthyng in https://github.com/axiom-data-science/intake-erddap/pull/54


**Full Changelog**: https://github.com/axiom-data-science/intake-erddap/compare/v0.3.0...v0.3.1

What's Changed
* changes so docs version is last release by kthyng in https://github.com/axiom-data-science/intake-erddap/pull/49
* build pdf by kthyng in https://github.com/axiom-data-science/intake-erddap/pull/50
* new tabledap source options by kthyng in https://github.com/axiom-data-science/intake-erddap/pull/52
* can now cache datasets using fsspec by kthyng in https://github.com/axiom-data-science/intake-erddap/pull/53


**Full Changelog**: https://github.com/axiom-data-science/intake-erddap/compare/v0.2.4...v0.3.0