Released version 3.3-dev1 with the following main changes :
- BUILD: tools: properly define ha_dump_backtrace() to avoid a build warning
- DOC: config: Fix a typo in 2.7 (Name format for maps and ACLs)
- REGTESTS: Do not use REQUIRE_VERSION for HAProxy 2.5+ (5)
- REGTESTS: Remove REQUIRE_VERSION=2.3 from all tests
- REGTESTS: Remove REQUIRE_VERSION=2.4 from all tests
- REGTESTS: Remove tests with REQUIRE_VERSION_BELOW=2.4
- REGTESTS: Remove support for REQUIRE_VERSION and REQUIRE_VERSION_BELOW
- MINOR: server: group postinit server tasks under _srv_postparse()
- MINOR: stats: add stat_col flags
- MINOR: stats: add ME_NEW_COMMON() helper
- MINOR: proxy: collect per-capability stat in proxy_cond_disable()
- MINOR: proxy: add a true list containing all proxies
- MINOR: log: only run postcheck_log_backend() checks on backend
- MEDIUM: proxy: use global proxy list for REGISTER_POST_PROXY_CHECK() hook
- MEDIUM: server: automatically add server to proxy list in new_server()
- MEDIUM: server: add and use srv_init() function
- BUG/MAJOR: leastconn: Protect tree_elt with the lbprm lock
- BUG/MEDIUM: check: Requeue healthchecks on I/O events to handle check timeout
- CLEANUP: applet: Update comment for applet_put* functions
- DEBUG: check: Add the healthcheck's expiration date in the trace messags
- BUG/MINOR: mux-spop: Fix null-pointer deref on SPOP stream allocation failure
- CLEANUP: sink: remove useless cleanup in sink_new_from_logger()
- MAJOR: counters: add shared counters base infrastructure
- MINOR: counters: add shared counters helpers to get and drop shared pointers
- MINOR: counters: add common struct and flags to {fe,be}_counters_shared
- MEDIUM: counters: manage shared counters using dedicated helpers
- CLEANUP: counters: merge some common counters between {fe,be}_counters_shared
- MINOR: counters: add local-only internal rates to compute some maxes
- MAJOR: counters: dispatch counters over thread groups
- BUG/MEDIUM: cli: Properly parse empty lines and avoid crashed
- BUG/MINOR: config: emit warning for empty args only in discovery mode
- BUG/MINOR: config: fix arg number reported on empty arg warning
- BUG/MINOR: quic: Missing SSL session object freeing
- MINOR: applet: Add API functions to manipulate input and output buffers
- MINOR: applet: Add API functions to get data from the input buffer
- CLEANUP: applet: Simplify a bit comments for applet_put* functions
- MEDIUM: hlua: Update TCP applet functions to use the new applet API
- BUG/MEDIUM: fd: Use the provided tgid in fd_insert() to get tgroup_info
- BUG/MINIR: h1: Fix doc of 'accept-unsafe-...-request' about URI parsing
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