curl/docs, branch master

Add gemini protocol support

2020-06-17T00:30:15+00:00

The gemini protocol's "speculative specification" is documented  at the
following URLs:

  https://gemini.circumlunar.space/docs/spec-spec.txt
  gopher://gemini.circumlunar.space/1/docs/spec-spec.txt
  gemini://gemini.circumlunar.space/docs/spec-spec.txt

This patch introduces preliminary support for version 0.11.0 of the
specification, as of March 1st 2020.

manpage: add three missing environment variables

2020-06-16T22:03:07+00:00

CURL_SSL_BACKEND, QLOGDIR and SSLKEYLOGFILE

Closes #5571

CODE_REVIEW.md: how to do code reviews in curl

2020-06-13T20:16:58+00:00

Assisted-by: Daniel Gustafsson
Assisted-by: Rich Salz
Assisted-by: Hugo van Kemenade
Assisted-by: James Fuller
Assisted-by: Marc Hörsken
Assisted-by: Jay Satiro

Closes #5555

version.d: expanded and alpha-sorted

2020-06-12T15:08:27+00:00

Added a few missing features not previously mentioned. Ordered them
alphabetically.

Closes #5558

ABI.md: rename to .md and polish the markdown

2020-06-12T15:05:21+00:00

Closes #5562

HELP-US: add a section for "smaller tasks"

2020-06-12T13:22:58+00:00

The point of this section is to meet the CII Best Practices gold level
critera:

 "The project MUST clearly identify small tasks that can be performed by
  new or casual contributors"

Closes #5560

TODO: retry on the redirected-to URL

2020-06-12T12:43:27+00:00

Closes #5462

TODO: remove 19.3 section title

2020-06-12T11:36:15+00:00

Follow-up to ad6416986755e417c66e2c6, which caused wrong formatting on
curl documentation website

Closes #5561

wording: avoid blacklist/whitelist stereotypes

2020-06-10T06:49:17+00:00

Instead of discussing if there's value or meaning (implied or not) in
the colors, let's use words without the same possibly negative
associations.

Closes #5546

HTTP3.md: clarify cargo build directory

2020-06-05T16:00:36+00:00

Cargo needs to be called from within the 'quiche' directory.

Closes #5522