Merge branch 'fix-debug-build' into 'master'
Fix building with UG_ENABLE_DEBUGGING=ON
Closes #23 (closed)
See merge request !86 (merged)
(cherry picked from commit 66e393e8)
56899c30 Add missing 'using namespace' statements 661f3b34 Remove the DEBUG_TIME macros e27250c8 Content of 'debug.h' should be in the UG namespace 1b82b8fa Minor fixes to make UG_ENABLE_DEBUGGING work