version 2.2.15: fixes in .pro (removed references to nonexistent files)

CMakeLists.txt

 cmake_minimum_required(VERSION 3.20)
-project(cumbia-qtcontrols-ng VERSION 2.2.13 LANGUAGES C CXX)
+project(cumbia-qtcontrols-ng VERSION 2.2.15 LANGUAGES C CXX)
 add_subdirectory(src)
 add_subdirectory(plugins)

cumbia-qtcontrols-ng.pri

@@ -25,8 +25,8 @@ CUMBIA_QTCONTROLS_NG_DOCDIR=$${INSTALL_ROOT}/share/doc/cumbia-qtcontrols-ng
 cumbia_qtcontrols_ng_LIB=cumbia-qtcontrols-ng
 
 
-VERSION_HEX = 0x020213
-VERSION = 2.2.13
+VERSION_HEX = 0x020215
+VERSION = 2.2.15
 
 DEFINES += CUMBIA_QTCONTROLS_NG_VERSION_STR=\"\\\"$${VERSION}\\\"\" \
     CUMBIA_QTCONTROLS_NG_VERSION=$${VERSION_HEX}