Convert authentication to options

[flimzy]

No description provided.

[codecov]

Codecov Report

Patch coverage: 60.46% and project coverage change: -0.36% ⚠️

Comparison is base (588781b) 82.94% compared to head (80dd38b) 82.59%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #708      +/-   ##
==========================================
- Coverage   82.94%   82.59%   -0.36%     
==========================================
  Files          85       84       -1     
  Lines        9035     8996      -39     
==========================================
- Hits         7494     7430      -64     
- Misses       1331     1358      +27     
+ Partials      210      208       -2     

Files Changed	Coverage Δ
driver/driver.go	100.00% <ø> (ø)
kivik.go	100.00% <ø> (ø)
mockdb/client.go	88.23% <ø> (-2.25%)	⬇️
mockdb/clientmock.go	94.39% <ø> (-0.21%)	⬇️
mockdb/expectations.go	96.92% <ø> (-0.34%)	⬇️
mockdb/gen/main.go	30.88% <ø> (ø)
couchdb/chttp/proxyauth.go	50.00% <23.07%> (-18.00%)	⬇️
couchdb/chttp/options.go	21.15% <52.38%> (+21.15%)	⬆️
couchdb/chttp/basicauth.go	77.14% <61.90%> (-22.86%)	⬇️
couchdb/chttp/chttp.go	97.04% <66.66%> (+1.39%)	⬆️
... and 2 more

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.