- Update to version 1.16
* gitlab CI: add a basic build test
* configure.ac: drop dependency `pthread-stubs` on Solaris
* configure.ac: Remove obsolete AC_HEADER_STDC
* Raise minimum required version of Python from 2.6 to 3.0
* Fix windows build.
* Fix indentation.
* Fix a compiler warning
* Fix handling of documented enum parameters
* Allow full paths to sockets on non-macOS
* DISPLAY starting with / or unix: is always a socket path
* Add tests for unix socket parsing
* autogen.sh: use quoted string variables
* c_client: Fix crash in xcb_randr_set_monitor
* configure.ac: drop `pthread-stubs` dependency on DragonFly and FreeBSD
* xcb_conn: Add a check for NULL to silence a UBSan runtime error
* configure.ac: Require xcb-proto >= 1.16.0
* Fix xcb_connect() call with a custom xcb_auth_info_t
* autogen: add default patch prefix
* Build DOUBLE-BUFFER extension.
* Require xcb-proto >= 1.15.1, which has Dbe
* configure.ac: drop dependency `pthread-stubs` on macOS
* autogen.sh: use exec instead of waiting for configure to finish
* Improve tutorial example
- adjusted bug-262309_xcb-xauthlocalhostname.diff,
n_If-auth-with-credentials-for-hostname-fails-retry-with-XAUTHLOCALHOSTNAME.patch
- added libxcb-dbe0 subpackage for libxcb-dbe.so.0*