### OpenGL

- Add support for showing tooltips for objects shown in `TGLViewer`. See `TGLEventHandler::TriggerTooltip(const char* text)` and `RemoveTooltip()`. Usage example is in class `TEveViewerList`.
- Add new overlay element `TGLCameraOverlay` that allows to display: a) coordinate axes for orthographic mode; b) intersection of center of screen with a given plane.
- Add suport for fading in/out of the viewer contents.
- Many improvements in text and axis rendering for orthographic view markup.
- In `TGLSceneBase` add data-member `Bool_t fSelectable` allowing one to preventing any of its elements to be selected. Useful when given scene is used as background to help guid the eye.

### Eve

- Added support for internal window management. Windows can be arranged in horizontal/vertical stacks, tabs and main windows. The containers and individaul windows can be moved to arbitrary window-slot. See classes `TEveWindow` and `TEveWindowManager`. See tutorial `tutorials/eve/test_windows.C`.
- `TEveQuadSet` -- Add flag 'Bool_t fAntiFlick'. If on (now the default) it causes each quad to be also rendered as a pixel, thus preventing it from disappearing when zoomed away. This is needed for visualization of small quads, e.g. silicon detectors digits.
- `TEveCalo` classes -- Add support for automatic rebinning of 3D views (only supported for 2D views before). In 2D mode support automatic determination of the cell color based on the most energetic contribution from available calo slices. Add support for enumerative registration of calorimeter towers. Before one had to provide THStack as input. See `TEveCaloDataVec` class.
- `TEveTrackList` -- Generalized API for finding of momentum limits.
- `TEveTrackPropagator` now supports propagation of charged particles in arbitrary / external magnetic field. Propagation can be done with the helix-stepper or with the Runge-Kutta method. New abstract interface to magnetic field `TEveMagField` to get field vector at given position. Implement two interfaces: `TEveMagFieldConst` for constant magnetic field and `TEveMagFieldDuo` (two constant magnetic fields, chosen by cylindrical radius). See examples in `tutorials/eve/track.C`.
- `TEvePointSetArray` -- Added underflow and overflow bins.
- Many improvements in text and axis rendering for axes in non-linear projections and for the dedicated lego view.
- New tutorial `tutorials/eve/lineset_test.py` showing how tu run Eve from python.