vcr v0.4.0

NEW FEATURES

• vcr now can handle requests from both crul and httr that write to disk; crul supports this with the disk parameter and httr through the write_disk() function; see the section on mocking writing to disk in the http testing book https://books.ropensci.org/http-testing/vcr-usage.html#vcr-disk; also see ?mocking-disk-writing within webmockr for mocking writing to disk without using vcr, and the section in the http testing book https://books.ropensci.org/http-testing/webmockr-stubs.html#webmockr-disk (#81) (#125)
• vcr gains ability to completely turn off vcr for your test suite even if you're using vcr::use_cassette/vcr::insert_cassette; this is helpful if you want to run tests both with and without vcr; workflows are supported both for setting env vars on the command line as well as working interactively within R; see ?lightswitch for details (#37)
• ignoring requests now works, with some caveats: it only works for now with crul (not httr), and works for ignoring specifc hosts, and localhosts, but not for custom callbacks. See the vcr configuration vignette https://docs.ropensci.org/vcr/articles/configuration.html#ignoring-some-requests for discussion and examples (#127)

MINOR IMPROVEMENTS

• documentation for R6 classes should be much better now; roxygen2 now officially supports R6 classes (#123)
• added minimal cassette name checking; no spaces allowed and no file extensions allowed; more checks may be added later (#106)

BUG FIXES

• fix handling of http response bodies that are images; we were converting raw class bodies into character, which was causing images to error, which can't be converted to character; we now check if a body can be converted to character or not and if not, leave it as is (#112) (#119) thanks @Rekyt for the report
• simple auth with package httr wasn't working (htrr::authenticate()); we were not capturing use of authenticate; it's been solved now (#113)
• we were not properly capturing request bodies with package httr requests; that's been fixed (#122)
• httr adapter was failing on second run, reading a cached response. fixed now (#124)
• response_summary() fixed; this function prints a summary of the http response body; sometimes this function would fail with multibyte string error because the gsub call would change the encoding, then would fail on the substring call; we now set useBytes = TRUE in the gsub call to avoid this problem (#126)