- update to 2.2.2:
* Improved speed of project resolving by employing multiple CPU
cores, if available.
* Object and array (var and varList) properties are now
immutable in Probe items.
* Modules can now contain `Parameters` items.
* ModuleProviders can now contain `PropertyOptions` items.
* Allow `"mold"` as value for `cpp.linkerVariant`.
* The systemIncludePaths property is now handled correctly for
clang-cl.
* Only create qbs modules for those Qt modules that products
actually need.
* Users can now opt out of using RPATH when linking on Linux.
* Protobuf module now requires pkg-config or built-in runtime.
* Protobuf module now requires C++17 on all platforms.
* Capnproto module: the outputDir property is now mutable.
* Added support for Groups to the VisualStudio generator.
* pkgconfig module provider: mergeDependencies property is
deprecated.
* Worked around crash in cl.exe when retrieving built-in
defines (QBS-1743).
* Fixed name collision check for multi-part modules (QBS-1772).
* Fixed potential assertion when attaching properties on
non-present modules (QBS-1776).
* Fixed the qbspkgconfig Qt provider for the case when there
is no Qt (QBS-1777).
* Make protobuf usable without qbspkgconfig again (QBS-1663).
* Add support for the definePrefix option to qbspkgconfig.