4.4.1

1. Fix - colz palette resize when drawing histogram second time
2. Fix - use embed in TCanvas color for background color of canvas itself
3. Fix - rotate too long X axis text labels
4. Fix - draw histogram bins on frame boundary
5. Fix - use alternative color for shapes with default black color
6. Fix - correctly handle pcon/pgon shape with rmin==rmax on top or bottom side

4.4.0

1. Fix faces orientation for all TGeo shapes.
2. Improve TGeoTorus creation - handle all parameters combinations
3. Implement TGeoCompositeShape, using ThreeCSG.js
4. Fix problem with color pallete when switch to 3D mode (#28)
5. Use nested CSS classes to avoid conflicts with other libraries (#29)
6. Let move and resize TFrame
7. Improve TH1/TH2 drawings
   • draw all histograms points in the range (no any skipped bins)
   • minimize SVG code for drawing (up to factor 100)
   • gives significant speedup in drawings
8. SVG code improvement for TGraph, TF1, TAxis drawings
9. Provide new tooltip kind
   • created only when needed (minimizing SVG code)
   • tooltip can be drawn for every object in the frame
   • touch devices are supported
10. Fix - let draw same object on the canvas with different options
11. Create cached list of known class methods. It can be extended by users.
12. Use of cached methods improves binary I/O performance by 20%
13. Support TGaxis
14. Project now can be obtained via 'bower install jsroot'
15. Support 'scat' and 'text' draw options for TH2
16. Support in binary I/O zipped buffers bigger than 16M
17. Correctly handle in binary I/O pointer on TArray objects (like in THnSparseArrayChunk)

4.3

1. Implement TGeoCtub, TGeoParaboloid and TGeoHype shapes
2. Support TGeoTube with Rmin==0
3. Exclude empty faces in TGeoArb8
4. Improve TGeoSphere creation - handle all parameters combinations
5. Introduce JSROOT.cleanup() function to safely clear all drawn objects
6. Fix wrong resize method in 'tabs' and 'collapsible' layouts
7. Fix canvas resize problem (#27)
8. Fix zero-height canvas when draw TGeo in collapsible layout
9. Fix problem of simultaneous move TGeo drawings and canvas in flexible layout

4.2

1. Significant performance improvements in 3D drawings - TGeo/TH2/TH3
2. Implement TGeoPara, TGeoGtra, TGeoXtru and TGeoEltu shapes
3. Optimize (reduce vertices number) for others TGeo shapes
4. Correct rotation/translation/scaling of TGeo nodes
5. Workaround for axis reflection (not directly supported in three.js)
6. Support array of objects in I/O (like in TAxis3D)
7. Correct reading of multi-dim arrays like Double_t fXY[8][2];
8. Provide canvas toolbar for actions like savepng or unzoom
9. Implement JSROOT.resize() function to let resize drawing after changes in page layout
10. Fix error with title display/update

4.1

1. Introduce object inspector - one could browse object members of any class
2. Let draw sub-items from TCanvas list of primitives like sub-pad or TLatex
3. Provide possibility to save drawn SVG canvas as PNG
4. TGraph drawing optimization - limit number of drawn points
5. Implement painter for TPolyMarker3D
6. Improve drawing and update of TMultiGraph
7. Reorganize 3D drawing of TH2/TH3 histograms, allow to mix 2D and 3D display together
8. Support overlay of 3D graphic over SVG canvas (used for IE)
9. Fix problems and improve flex(ible) layout

4.0

1. New TGeo classes support:
   • browsing through volumes hierarchy
   • changing visibility flags
   • drawing of selected volumes
2. New 'flex' layout:
   • create frames like in Multi Document Interface
   • one could move/resize/minimize/maximize such frames
3. Significant (factor 4) I/O performance improvement:
   • use ArrayBuffer class in HTTP requests instead of String
   • use native arrays (like Int32Array) for array data members
   • highly optimize streamer infos handling
4. TH2 drawing optimization:
   • if there are too many non-empty bins, combine them together
   • when zoom-in, all original bins will be displayed separately
   • let draw big TH2 histogram faster than in 1 sec
   • optimization can be disabled by providing '&optimize=0' in URL
5. TF1 drawing optimization:
   • function 'compiled' only once
6. Reorganize scripts structure:
   • move all math functions to JSRootMath.js
   • TH2, TF1, THStack and TMultiGraph painters moved into JSRootPainter.more.js script
   • reduce size of scripts required for default functionality
7. Update all basic libraries:
   • d3.js - v3.5.9,
   • jquery.js - v2.1.4,
   • jquery-ui.js - v1.11.4,
   • three.js - r73
8. Implement ROOT6-like color palettes:
   • all palettes in range 51...112 are implemented
   • by default palette 57 is used
   • one could change default palette with '&palette=111' in URL
   • or palette can be specified in draw option like '&opt=colz,pal77'

3.9

1. Support non-equidistant bins for TH1/TH2 objects.
2. Display entries count from histo.fEntries member, only when not set use computed value
3. Support italic and bold text when used with MathJax
4. Improve TF1 drawing - support exp function in TFormula, fix errors with logx scale, enable zoom-in, (re)calculate function points when zooming
5. Support several columns in TLegend
6. Introduce context menus for x/y axis, add some items similar to native ROOT menus
7. Introduce context menu for TPaveStats, let switch single elements in the box
8. Enable usage of all context menus on touch devices
9. Implement JSROOT.Math.Prob function, provides probability value in stat box
10. Introduce context menu for color palette (z axis)
11. Implement col0 and col0z draw option for TH2 histograms, similar to ROOT6

3.8

1. Let use HTML element pointer in JSROOT.draw function like:
   JSROOT.draw(document.getElementsByTagName("div")[0], obj, "hist");
   Normally unique identifier was used before, which is not required any longer.
   Of course, old functionality with element identifier will work as well.
2. TreePlayer can also be used for trees, which not yet read from the file.
   Requires appropriate changes in TRootSniffer class.
3. Fix error in I/O with members like: Double_t *fArr; //[fN]
4. Introduce JSROOT.OpenFile function. It loads I/O functionality automatically,
   therefore can be used directly after loading JSRootCore.js script
5. Same is done with JSROOT.draw function. It is defined in the JSRootCore.js
   and can be used directly. Makes usage of JSROOT easier
6. Introduce JSRootPainter.more.js script, where painters for auxiliary classes
   will be implemented.
7. Implement painter for TEllipse, TLine, TArrow classes
8. Fix several problems with markers drawing; implement plus, asterisk, mult symbols.
9. Implement custom layout, which allows to configure user-defined layout for displayed objects
10. Fix errors with scaling of axis labels.
11. Support also Y axis with custom labels like: http://jsroot.gsi.de/dev/?nobrowser&file=../files/atlas.root&item=LEDShapeHeightCorr_Gain0;1&opt=col

3.7

1. Support of X axis with custom labels like:
   http://web-docs.gsi.de/~linev/js/3.7/index.htm?nobrowser&json=../files/hist_xlabels.json

2. Extend functionality of JSROOT.addDrawFunc() function. One could register type-specific
   make_request and after_request functions; icon, prereq, script, monitor properties.
   This let add more custom elements to the generic gui, implemented with JSROOT.HierarchyPainter

3. Provide full support of require.js. One could load now JSRootCore.js script like:

   <script type="text/javascript" src="require.js" data-main="scripts/JSRootCore.js"></script>

   After this several modules are defined and can be used with syntax like:

   require(['JSRootPainter'], function(jsroot) { /*any user code*/});

   Also inside JSROOT require.js used to load all dependencies.

3.6

1. Try to provide workaround for websites where require.js already loaded.
   This makes problem by direct loading of jquery and jquery-ui
2. Provide workaround for older version of jquery-ui
3. Prompt for input of command arguments
4. After command execution one could automatically reload hierarchy (_hreload property) or
   update view of displayed object (_update_item property)
5. Use HiearchyPainter for implementing draw.htm. This let us handle
   all different kinds of extra attributes in central place
6. Fix problem in tabs layout - new tab should be add to direct child
7. When drawing several tabs, activate frame before drawing - only then
   real frame size will be set
8. Fix problem with GetBBox - it only can be used for visible elements in mozilla.
9. Support drawing of fit parameters in stat box, use (as far as possible) stat and fit format for statistic display
10. Implement 'g' formatting kind for stat box output - one need to checks significant digits when producing output.
11. Support new draw options for TGraph: 'C', 'B1', '0', '2', '3', '4', '[]'
12. Primary support for STL containers in IO part. Allows to read ROOT6 TF1.
13. Full support of TGraphBentErrors
14. Support objects drawing from JSON files in default user interface, including monitoring. One could open file from link like:
    https://root.cern.ch/js/dev/?json=demo/canvas_tf1.json
15. Introduce JSROOT.FFormat function to convert numeric values into string according format like 6.4g or 5.7e. Used for statistic display.