v1.1.0

Release v1.1.0

Fix SELinux detection, prevent a double-free, and unbreak the build.

- the SELINUX_ENABLED branch of security_info::update() did not even
  compile (it referenced this->selinux_state and ->state instead of the
  ->_state member) and, had it compiled, an unconditional `_state = 0`
  after the if/else chain would have discarded the result. Correct the
  member access and make the disabled case an else branch. SELinux now
  reports enforcing/permissive/disabled/unsupported correctly.
- kernel_info and security_info own raw pointers with a destructor but no
  copy operations, so an accidental copy double-freed them. Delete the
  copy constructor and copy assignment on both.
- remove the declared-but-never-defined private helpers from
  security_info, a stray <istream> include, and the unused parameters of
  the example's main().

Bump the submodules to versions that build on current compilers: common
(its lowercase_map.hpp referred to a non-existent member and failed under
GCC's -Wtemplate-body; the new revision moves tsl/rva to nested
submodules) and throws (v1.1.0).

Refresh the GitHub Actions (checkout@v5, create/upload actions @v2,
push/pull_request triggers, submodules in the release checkout) and note
the security features and the SELinux build requirement in the README.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>