* Warn if ODKC version too low
* Modernised parsing of httr::content()

* Reference page heading changed from Datasets to Entity Lists with further details for description taken from the ODK docs
* In reply to #153 (comment)

* semver_gt/lt always parses version strings with parse_odkc_version and therefore accepts strings with complete or partial semantic versions.

* Add naming conventions to contributing guide
* Add NEWS
* Update README attribution
* Replace any reference to `dataset_` with `entitylist_`
* Lint and style package
* Fix `semver_{gt, lt}` examples: takes plain version string, not parsed semver object

* Downloads entity lists as `entities.csv`
* Does not yet support `$filter` and `ETag`

* Downloaded CSV is named after Entity List name
* Support ETag and $filter
* Improve docs, link helpful resources
* Improve submission_export: create local_dir if not exists
* Add tests