Maintenance release

Fixed

• Expose a previously silent download error (#110; Thanks to @jfy133!)

Changed

• Repair outdated links in documentation
• Improve some code sections in minor ways

Complete transition to ROpenSci-style API

• NEW API: The deprecations announced in v0.8.0 are now completed: The
  bd_retrieve() family of functions has replaced retrieve_data() and
  retrieve_search_results() has been renamed to bd_retrieve_by_search(),
  see #96. Please update scripts and other downstream code that use BacDiveR.
• purrr is no longer an imported / required dependency, but only suggested
  due to use in the introductory vignette, see #98.

New API that conforms to ROpenSci

Added

• NEW API: The bd_retrieve() family of functions will replace retrieve_data()
  soon. It consists of bd_retrieve(id = …), bd_retrieve_by_culture(collectionno = …),
  bd_retrieve_by_sequence(accession = …) and bd_retrieve_taxon(name = …)
  which is more auto-complete-friendly and should help avoid the internal need
  to sanitise inputs.

Deprecated

• retrieve_data() has been replaced as described above.
• retrieve_search_results() has been renamed to bd_retrieve_by_search().
• Both old functions will be removed in the next major version. Please update
  your BacDiveR-using scripts and other downstream code.

Don't stop, never give up!

• Added a vignette section about mass-downloading datasets.
• Instead of stopping with an error if a search returns no results, BacDiveR now
  only warns about this case and returns an empty list (#93).
• Estimated download times are now reported before all downloads longer than ca.
  30 seconds (#84).

Fix NULL comparison bug

• Fixed errors caused by comparing against a NULL (#91; Thanks to @jotech!)

Logic-Checking BacDive Datasets

• added a vignette about Logic-Checking BacDive Datasets
• changed retrieve_search_results() to return NULL when no results are found, in
  order to ease integration of datasets into testthat tests.
• fixed another JSON whitespace escaping bug (#91; Thanks to @jotech!)

v0.5.0-beta

• Added syncing of release versions to Zenodo, starting with 10.5281/zenodo.1308061

• The JSON downloads are no longer purged of all space characters pre-emptively
  to prevent jsonlite from complaining about invalid encoding (#43). Instead,
  only \r, \n and \t are repaired to \\r, \\n and \\t, which jsonlite
  expects. This leads to different output (newline & tabs, where previously only
  spaces occured)! Thus, if you are parsing BacDiveR output in any way, you may
  need to adjust that. Because I consider this unlikely given the "maturing" status,
  and because no API surface was changed, I don't consider this a major change
  in the SemVer.org sense.

Zenodo-DOI

BacDiveR 0.4.2

Fixed

• Install errors are now warnings and better advise about fixing them (#62)

BacDiveR 0.4.1

Changed

• Don't run all function docu examples, and limit their output on the reference pages (see #52)

BacDiveR 0.4.0

Added

• This changelog (see #41)
• retrieve_search_results(), see #61
• Architecture Decision records, see #53 & /docs/arch/adr-*.md

Changed

• retrieve_data() now downloads the dataset(s) by default, not only the ID(s), see #54 & #59
• Datasets in the aggregated (large) list are now named according to their
  bacdive_IDs (see #47). Before, the lists were only numbered with 1, 2, 3,
  etc.

BacDiveR 0.3.1

Fixed

• An error in the download of a single dataset found through it's culture collection number (see #45)

Added

• Usable example / vignette in the README.md file (see #16)