1.8.26

* Fixed a regression from 1.8.24 where the opacity of objects was computed incorrectly.
* Fixed a bug where some objects resizing would not notify the Diagram.

1.8.25

* Fixed a regression from 1.8.24 where some browsers and mice would use an incorrect wheel delta.
* Performance improvements when drawing Diagrams with large numbers of GraphObjects out of view.

1.8.24

* Fixed an issue with scroll wheel delta when making two-finger gestures to scroll or zoom.
* Improved ToolManager.positionToolTip and ContextMenuTool.positionContextMenu when zoomed in or out.
* Performance improvements when adding large numbers of GraphObjects to Panels and when replacing a large Diagram.model. Diagram.clear now releases a few temporary references it had to old Parts in internal temporary data structures.

1.8.23

* This bugfix potentially alters a Shape's measurements when a minSize and a strokeWidth are present: GraphObject.minSize now correctly constrains the size of Shapes. Before, the minSize of a shape would incorrectly subtract the strokeWidth.
* Disconnected Links now respect Part.dragComputation. This can be used to make them snap when dragging, for example with:
    dragComputation: function(part, pt, gridpt) { return gridpt; }

1.8.21

* Fixed an issue setting certain cursors as the Diagram.currentCursor on
webkit based browsers.
* Fixed a bug where updating the Link.fromShortLength or
Link.toShortLength weren't properly updating the link's geometry.
*Self-links that are rendered as bezier loops no longer include
resegmenting handles.

1.8.20

* Diagram.zoomToFit and CommandHandler.zoomToFit now re-position the diagram upon zoom, even if the Diagram.scrollMode is set to Diagram.InfiniteScroll.

1.8.19

* Enabled two-finger zooming on MacBook trackpads.
* Fixed half-disconnected link routing bug involving "...Side" Spots for Nodes that are members of Groups.
* Improved LayeredDigraphLayout alignment of nodes linked to visible nodes inside groups.

1.8.18

* Fixed the implementation of some Arc paths in Diagram.makeSvg.

1.8.17

* Return values from TextBlock.graduatedFunction will now be converted
to strings for safety.
* Fixed a regression for scroll-wheel zooming that was introduced in
1.8.15.
* Fixed error about showing a context menu Adornment when that same
context menu is being shown in another Diagram.
* The TextEditingTool now sets its height via the number of
textarea.rows, instead of estimating text height and setting CSS height
style.
* Fixes to TextEditingTool, including a positioning fix in IE11.

1.8.16

* Group.layout setter now correctly triggers a relayout, if the newly
assigned layout is invalid.
* Fixed a bug with scrollbar values after some initial layouts.
* Fixed a bug with InputEvent.viewPoint on Diagram.lastInput when
dragging between Diagrams.
* Fixed a drawing bug with separator dash arrays, affecting
RowColumnDefinition.separatorDashArray,
Panel.defaultColumnSeparatorDashArray, and
Panel.defaultRowSeparatorDashArray.