* make private constructors work across packages
* fix go module related docker deployment issues
* make svg module optional
* bump openssl version for android docker images
* new (experimental) function to directly call qml functions from go
* fix QVariant related issue with older Qt versions
* fix qtmoc issue
* qml support for map[string]T, map[string]map[string]*QVariant, [][]*QVariant, []map[string]*QVariant and map[string][]*QVariant
* qml support for []*CustomMocStruct
* new "NewQVariant1(interface{}) *QVariant" and "(*QVariant).ToInterface() interface{}" functions
* fix docker go module support
* various fixes for js/wasm ([]byte support, quickcompiler support, moc fixes)
* docker go modules support
* android arm64 support
* hide rarely used dependencies behind build flags
* various minor fixes
* various minor fixes and cleanups
* support interface{} returns for js/wasm
* fix android builds on darwin
* support for the virtualkeyboard module
* fixes for docker image builds
* cleanup callback handling
* fix possible moc memory leaks
* new virtualkeyboard examples
* js/wasm GOCACHE fix for Go 1.12+
* make use of the official Go 1.12 wasm build and replace js.NewCallback with js.FuncOf
* update docker images to Go 1.12.4
* revive raspberry images
* fix raspberry related bundling issue
* add the multimedia module to the raspberry images
* fix raspberry related QT_API issue
* remove unecessary *char to []byte copy overhead in some unlikely cases
* fix Qt install script
* initial partially support for Felgo (former V-Play) on darwin
* fix charts/audio example and darwin
* fix common/widgets_demo example on iOS (issue #451)
* fix widgets/renderer memory leak
* fix possible QT_PKG_CONFIG + QT_VERSION race condition
* fix static linux docker image
* remove the need to set CGO_*_ALLOW flags on Linux and macOS
* change default desktop env path on Linux
* remove the need to use an *.sh helper script to start your deployed executable
* fix retina scaling issue for an clean "qtdeploy -fast" build on macOS