* Add initializeGL and deinitializeGL methods to OpenSpaceModule Call releaseAll from ProgramObjectManager in deinitializeGL to guard against errors when deinitializing assets
* Change removeProgramObject function in RenderEngine to take a non-owning pointer instead of a reference to a unique pointer to make it compatible with the ProgramObjectManager
Update Ghoul repository
* Using ProgramObjectManager in more modules to reduce the number of programs compiled at startup
* Introduced guiName to PropertyOwner
* Added requirement that PropertyOwner::identifier may not contain whitespaces
* Changed Name to Identifier in asset and scene files
* Added new PropertyOwner to RenderEngine that owns the ScreenSpaceRenderables
* Moved Name and GuiPath into GUI group
* Added user-facing names to layer groups
* Make derived transform classes less involved in simulation state
* Add performance measurements in openspaceengine
* Avoid redundant transformation lookups
* Fix bug causing redundant calls to GPULayerManager::bind
* Move water reflectance to alpha component of normal buffer. Remove otherData buffer.
Implemented new GUI component to handle WMS servers
* Add Lua scripts to support adding GIBS datasets (closes#222)
* Add Lua function to load WMS servers from a predefined file
* Workaround for Visual Studio 15.3 compile fix in Windows headers
* Initial support for parsing GetCapabilities file and automatically add layers
* Add a Trigger property to remove a layer
* Support default servers
* Add default file
* Move WMS server code from GUI component into GlobeBrowsingModule
* Add Lua scripts for loading and removing WMS servers
Automatically load default servers on startup
* Reset tile provider before removing a layer tolimit the crash risk
Add "From focus" button to switch globebrowsing gui to the same node as the focus
* Remove warnings
Remove compile error with nonexisting GDALOpenEx function
* Rename OnScreenGui module to ImGui
* Support multiple external module folders (closes#31)
* Cleaning up CMake files
* Restructure application specification
* Add parameter for library mode to all modules
* Add functions to handle global variable state
* Misc/remove warnings (#383)
* Increase build timeout and do a clean rebuild every commit
