* Added socks5_proxy to options

* correct options freeing

* Update CHANGELOG.md

* Add socks5_proxy attribute to curl_transport_state

* formatting

* refactor to use single proxy attribute

* format

* Added back deprecated http_proxy API

* formatting

* refactor sentry_transport_winhttp.c to use opts->proxy

* formatting

* update crashpad dependency

* fix: update minimum libcurl version check to 7.21.7

* update crashpad dependency

* test: add proxy integration tests

* get latest crashpad changes

* feat: add example.c run-args for http and socks5 proxy

* test: changed test name + added more mitmdump startup time

* chore: format

* test: add mitmproxy to requirements.txt

* test: add skip for proxy test on non-MacOS platforms

* test: move socksproxy-off assert into AssertionError check for Linux test

* test: change expected http log length to match platform

* test: order of operations

* test: run http proxy tests on all platforms

* test: add special case for Windows Autoproxy

* apply suggestions from code review

* chore: added comments about proxy behaviour

* cleaned up test and moved comments to proper place
(let's hope I didn't mess up CI)

* chore: fix minor comment typo

* chore: added api documentation

* Update include/sentry.h

Co-authored-by: Mischan Toosarani-Hausberger <mischan@abovevacant.com>

* Update CONTRIBUTING.md

Co-authored-by: Mischan Toosarani-Hausberger <mischan@abovevacant.com>

* update crashpad submodule

* update crashpad submodule (again)

* updated CHANGELOG.md

* updated CHANGELOG.md again

---------

Co-authored-by: Mischan Toosarani-Hausberger <mischan@abovevacant.com>

* updated readme

* added link to C+20 requirement issue

* Add build prerequisites into readme

* Added additional link to Contributing.md

* apply suggestion from code review

Co-authored-by: Mischan Toosarani-Hausberger <mischan@abovevacant.com>

* apply suggestions from code review

---------

Co-authored-by: Mischan Toosarani-Hausberger <mischan@abovevacant.com>

* Extended API to allow explicit timings

* Add tests for timestamped API functions

* re-add todos and comments that went missing in refactoring

* update changelog

* update docstrings for new API

* apply refactoring suggestion from code review

* change assert_timestamp to be more accurate

* cleanup unnecessary includes