Change clang-format configuration Prefer ParamColor::ParamColor(const gchar *name, const gchar *guitext, const gchar *desc, const Parameter::_scope_t scope, bool gui_hidden, const gchar *gui_tip, Inkscape::Extension::Extension *ext, Inkscape::XML::Node *xml) : Parameter(name, guitext, desc, scope, gui_hidden, gui_tip, ext) , _value(0) , _changeSignal(0) { over ParamColor::ParamColor(const gchar *name, const gchar *guitext, const gchar *desc, const Parameter::_scope_t scope, bool gui_hidden, const gchar *gui_tip, Inkscape::Extension::Extension *ext, Inkscape::XML::Node *xml) : Parameter(name, guitext, desc, scope, gui_hidden, gui_tip, ext), _value(0), _changeSignal(0) {

update clang format spec for latest clangformat version

improve clang-format settings

add clang-format file, not sure if all settings are set the way we want them to be