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Commit 57348eb9

 added support for the
MesaLink vtls backend, but missed updating the TLS section containing
supported backends in the docs.

Closes #3134
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

Ref: https://rawgit.com/ "RawGit has reached the end of its useful life"
Ref: https://news.ycombinator.com/item?id=18202481
Closes https://github.com/curl/curl/pull/3131

[ci skip]

- link TLS 1.2 and TLS 1.3 options
- link proxy and non-proxy options

Closes #3121

Changes s/OSCP/OCSP/ and bumps the copyright year due to the change.

Closes #3112
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

as detected by codespell 1.14.0

Closes https://github.com/curl/curl/pull/3114


Reviewed-by: Marcel Raad <Marcel.Raad@teamviewer.com>

Bug bounty explainer. See https://bountygraph.com/programs/curl

Closes #3067

Add DYLD_INSERT_LIBRARIES support to the TODO list. Reported in #2394.

The parameter reference <string> was causing rendering issues in the
generated HTML page, as <string> isn't a valid HTML tag. Fix by back-
tick escaping it.

Closes #3099
Reviewed-by: Jay Satiro <raysatiro@yahoo.com>
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

Use TLS vX.Y throughout the document, instead of TLS X.Y, as that was
already done in all but a few cases. Also fix a few typos.

Closes #3076
Reviewed-by: Marcel Raad <Marcel.Raad@teamviewer.com>
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

Use proper Markdown hyperlink format for the Bountygraph links in order
for the generated website page to be more user friendly. Also link to
the sponsors to give them a little extra credit.

Closes #3082
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

- Advise user that --data-binary sends a default content type of
  x-www-form-urlencoded, and to have the data treated as arbitrary
  binary data by the server set the content-type header to octet-stream.

Ref: https://github.com/curl/curl/pull/2852#issuecomment-426465094

Closes https://github.com/curl/curl/pull/3085

Bug: #3077

Noticed a typo reading through the docs.

Closes #3069

Closes #3050

- and one in docs/MANUAL as well

Closes https://github.com/curl/curl/pull/3038

- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few indentations/line continuations
  in manual examples

Closes https://github.com/curl/curl/pull/3037

- also update two URLs outside of docs/examples
- fix spelling of filename persistant.c
- fix three long lines that started failing checksrc.pl

Closes https://github.com/curl/curl/pull/3036

also:
- fix two warnings in synctime.c (one of them Windows-specific)
- upgrade URLs in synctime.c and remove a broken one

Closes https://github.com/curl/curl/pull/3033

Closes #3030

Closes #3032

Closes https://github.com/curl/curl/pull/3031

Removed DoH.

Closes #2734

Assisted-by: Daniel Gustafsson
Closes #3019

In order for this API to fully work for libcurl itself, it now offers a
CURLU_GUESS_SCHEME flag that makes it "guess" scheme based on the host
name prefix just like libcurl always did. If there's no known prefix, it
will guess "http://".

Separately, it relaxes the check of the host name so that IDN host names
can be passed in as well.

Both these changes are necessary for libcurl itself to use this API.

Assisted-by: Daniel Gustafsson
Closes #3018

TODO item 1.1 was implemented in commit 946ce5b6

, update reference
to it with instead referencing the implemented option.

Closes #3013
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

Closes #3004

Make sure to not overwrite the reallocated pointer in realloc() calls
to avoid a memleak on memory errors.

Closes #2994

This yields

  "the scheme is %s\n"

instead of

  "the scheme is %s0

Closes #2970

Closes #2968
Reviewed-by: Daniel Stenberg <daniel@haxx.se>