diff --git a/Use-KCrash.patch b/Use-KCrash.patch
deleted file mode 100644
index d73edeb..0000000
--- a/Use-KCrash.patch
+++ /dev/null
@@ -1,127 +0,0 @@
-From: Frederik Schwarzer <schwarzerf@gmail.com>
-Date: Wed, 27 Jan 2016 10:16:59 +0000
-Subject: Use KCrash.
-X-Git-Tag: v16.03.80
-X-Git-Url: http://quickgit.kde.org/?p=kjumpingcube.git&a=commitdiff&h=482b9cf76083e8e41dad9e4561bacc6f507cc352
----
-Use KCrash.
----
-
-
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -2,14 +2,16 @@
- 
- cmake_minimum_required (VERSION 2.8.12 FATAL_ERROR)
- set (QT_MIN_VERSION "5.3.0")
-+set (KF5_MIN_VERSION "5.15.0")
- 
- find_package(ECM 1.7.0 REQUIRED CONFIG)
- set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${ECM_MODULE_PATH} ${ECM_KDE_MODULE_DIR})
- 
- find_package(Qt5 ${QT_MIN_VERSION} REQUIRED NO_MODULE COMPONENTS Widgets Qml Quick QuickWidgets Svg Test)
--find_package(KF5 REQUIRED COMPONENTS 
-+find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
-     CoreAddons
-     Config
-+    Crash
-     ItemModels
-     WidgetsAddons
-     WindowSystem
-@@ -22,7 +24,8 @@
-     KIO
-     NotifyConfig
-     NewStuff
--    KDELibs4Support)
-+    KDELibs4Support
-+)
- 
- find_package(KF5KDEGames 4.9.0 REQUIRED)
- find_package(Phonon4Qt5 CONFIG REQUIRED)
-@@ -36,8 +39,8 @@
- 
- add_definitions(-DQT_USE_FAST_CONCATENATION -DQT_USE_FAST_OPERATOR_PLUS)
- 
--add_subdirectory( pics )
--add_subdirectory( doc )
-+add_subdirectory(pics)
-+add_subdirectory(doc)
- 
- ########### next target ###############
- 
-@@ -50,30 +53,42 @@
-    ai_main.cpp
-    ai_kepler.cpp
-    ai_newton.cpp
--   ai_box.cpp )
-+   ai_box.cpp
-+)
- 
--ki18n_wrap_ui(kjumpingcube_SRCS settings.ui )
-+ki18n_wrap_ui(kjumpingcube_SRCS settings.ui)
- 
--kconfig_add_kcfg_files(kjumpingcube_SRCS prefs.kcfgc )
-+kconfig_add_kcfg_files(kjumpingcube_SRCS prefs.kcfgc)
- 
- file(GLOB ICONS_SRCS "${CMAKE_CURRENT_SOURCE_DIR}/*-apps-kjumpingcube.png")
- ecm_add_app_icon(kjumpingcube_SRCS ICONS ${ICONS_SRCS})
- add_executable(kjumpingcube ${kjumpingcube_SRCS})
- 
--target_link_libraries(kjumpingcube  KF5::KIOCore KF5KDEGames KF5::XmlGui KF5::KDELibs4Support Qt5::Svg)
-+target_link_libraries(kjumpingcube
-+    KF5::KIOCore
-+    KF5KDEGames
-+    KF5::XmlGui
-+    KF5::KDELibs4Support
-+    Qt5::Svg
-+)
- 
--install(TARGETS kjumpingcube  ${KDE_INSTALL_TARGETS_DEFAULT_ARGS} )
-+install(TARGETS kjumpingcube  ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})
- 
- 
- ########### install files ###############
- 
--install( PROGRAMS org.kde.kjumpingcube.desktop  DESTINATION  ${KDE_INSTALL_APPDIR} )
--install( FILES kjumpingcube.kcfg  DESTINATION  ${KDE_INSTALL_KCFGDIR} )
--install( FILES kjumpingcubeui.rc  DESTINATION  ${KDE_INSTALL_KXMLGUI5DIR}/kjumpingcube )
-+install(PROGRAMS org.kde.kjumpingcube.desktop  DESTINATION  ${KDE_INSTALL_APPDIR})
-+install(FILES kjumpingcube.kcfg  DESTINATION  ${KDE_INSTALL_KCFGDIR})
-+install(FILES kjumpingcubeui.rc  DESTINATION  ${KDE_INSTALL_KXMLGUI5DIR}/kjumpingcube)
- 
--ecm_install_icons( ICONS 128-apps-kjumpingcube.png  16-apps-kjumpingcube.png  22-apps-kjumpingcube.png  32-apps-kjumpingcube.png  48-apps-kjumpingcube.png  64-apps-kjumpingcube.png DESTINATION ${KDE_INSTALL_ICONDIR} THEME hicolor   )
--
--
--
-+ecm_install_icons(ICONS
-+    128-apps-kjumpingcube.png
-+    16-apps-kjumpingcube.png
-+    22-apps-kjumpingcube.png
-+    32-apps-kjumpingcube.png
-+    48-apps-kjumpingcube.png
-+    64-apps-kjumpingcube.png
-+    DESTINATION ${KDE_INSTALL_ICONDIR} THEME hicolor
-+)
- 
- feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)
- 
-
---- a/main.cpp
-+++ b/main.cpp
-@@ -24,6 +24,7 @@
- 
- 
- #include <KAboutData>
-+#include <KCrash>
- #include <QApplication>
- #include <KLocalizedString>
- #include <QCommandLineParser>
-@@ -59,6 +60,7 @@
- 
-     QCommandLineParser parser;
-     KAboutData::setApplicationData(aboutData);
-+    KCrash::initialize();
-     parser.addVersionOption();
-     parser.addHelpOption();
-     aboutData.setupCommandLine(&parser);
-