meson.build: Fix broken check for atomic support. This broke on riscv64…

meson.build: Fix broken check for atomic support. This broke on risc64. The removed lines are redundant with their subsequent two because they verify the actual code, and not implementation details that may vary...
meson.build: Bumped version metadata to 0.0.003 and set soname major version to 1 in preparation for ABI freeze and upcoming first stable release...

Allow to be used as submodule

ci(autopkgtest): use autopkgtest 5.17

fix(ssl): enable ssl mode for moving buffers

ci: add abipkgdiff check

abipkgdiff is a tool capable of comparing two library packages and tell
if one of them introduced ABI-breaking changes.

Plain abidiff is also available, but since we already build Debian
packages I thought it would be more convenient to use pkg version.

This currently works only for pull requests.

Due to internals of pistache, a write after a retry may be with a
different address than the original call. By default, OpenSSL doesn't
like that:

    SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER

        Make it possible to retry SSL_write() with changed buffer location
        (the buffer contents must stay the same). This is not the default to
        avoid the misconception that non-blocking SSL_write() behaves like
        non-blocking write().

This should fix any weird behavior on large file / responses (#807)
Signed-off-by: Louis Solofrizzo <lsolofrizzo@scaleway.com>

ssl: Enable partial write on SSL context

This patch enables the partial write mode on the SSL server context,
giving us "normal" behavior on non-blocking sockets.
Signed-off-by: Louis Solofrizzo <lsolofrizzo@scaleway.com>

ci(autopkgtest): fix Debian data checkout

ci(autopkgtest): use uscan to get upstream source

Bump prismjs from 1.24.0 to 1.25.0 in /pistache.io

Bump url-parse from 1.5.1 to 1.5.3 in /pistache.io

Bump axios from 0.21.1 to 0.21.4 in /pistache.io

Bumps [axios](https://github.com/axios/axios) from 0.21.1 to 0.21.4.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md)
- [Commits](https://github.com/axios/axios/compare/v0.21.1...v0.21.4)

---
updated-dependencies:
- dependency-name: axios
  dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>

Bumps [url-parse](https://github.com/unshiftio/url-parse) from 1.5.1 to 1.5.3.
- [Release notes](https://github.com/unshiftio/url-parse/releases)
- [Commits](https://github.com/unshiftio/url-parse/compare/1.5.1...1.5.3)

---
updated-dependencies:
- dependency-name: url-parse
  dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>

related to #41
related to #183
related to #760
closes     #960
related to #985

related to #6
related to #538
related to #649
related to #741
related to #874

closes     #525

Bumps [prismjs](https://github.com/PrismJS/prism) from 1.24.0 to 1.25.0.
- [Release notes](https://github.com/PrismJS/prism/releases)
- [Changelog](https://github.com/PrismJS/prism/blob/master/CHANGELOG.md)
- [Commits](https://github.com/PrismJS/prism/compare/v1.24.0...v1.25.0)

---
updated-dependencies:
- dependency-name: prismjs
  dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>

build(meson): look for howardhinnant-date

Since the "date" library has such a general name,
it often gets renamed to "hinnant-date",
"howardhinnant-date", etc. This change enables
Meson to find the library when it is called in
either ways. This "new" name is used, for example,
in the Debian package.

ci: add conventional commits check

Conventional Commits is a specification that aims at improving commit
messages and history.

It consists of a simple canonical format for commit messages:
type(optional scope): description

Having a small list of types helps understand when a change is breaking,
when it adds a feature, where it patches something, or when it is
unrelated to the main library (build system changes, CI, tests...).

This is really useful when determing when to release and what type of
release should be made (major, minor, or patch release).

chore: check VERSION_GIT_DATE in pre-commit hook

meson: small improvements

This makes Meson use the internal Python version instead of looking for
the "python3" executable in the system.

This means that python will be more likely to be found on system where
the binary is named differently (Windows?), python3 is not required (any
version will do), and could even be faster.

[SERVER] ssl: Add the possibility for the user to set a password callback

Add unit test for #970

Moved Debian data to the `debian` branch

fix: remove extra ; in include/http.h