[Qbs] Qbs 1.15.0 released

[Richard Weickelt]

Hello,

I'd like to announce the release of Qbs 1.15.0. Source and binary
packages as well as a change log can be found at
https://download.qt.io/official_releases/qbs/1.15.0/.
This release of Qbs is also shipped as part of Qt Creator 4.11.0.

Please refer to https://www.qt.io/blog/qbs-1.15.0-released for more details.

Thanks to everybody who contributed.

Richard