1. 2018-03-25 D11574: Add build compatibility qalculate-backend with libqalculate < 2. kde-edu Albert Astals Cid 2. 2018-03-25 D11574: Add build compatibility qalculate-backend with libqalculate < 2. kde-edu-deve Albert Astals Cid 3. 2018-03-25 D11574: Add build compatibility qalculate-backend with libqalculate < 2. kde-edu-deve Alexander Semke 4. 2018-03-25 D11574: Add build compatibility qalculate-backend with libqalculate < 2. kde-edu Alexander Semke 5. 2018-03-22 D11574: Add build compatibility qalculate-backend with libqalculate < 2. kde-edu-deve Nikita Sirgienko 6. 2018-03-22 D11574: Add build compatibility qalculate-backend with libqalculate < 2. kde-edu Nikita Sirgienko