*added outlet to [draw] to notify for events
*added svg-style event mousedown (more to come)
*added a "drag" event for convenience (similar to curve_motion)
*fixed default strokelinejoin per svg spec
*event "bubbling" so that the closest shape to front gets the notification
*added "bbox" method to turn off bbox calculation (similar to curve's -n flag)
*added a "pointerevents" method per svg-spec
*fixed skewx and skewy transforms to use degrees instead of radians

*reversed "fix" to a regression made in a previous commit (see commit 28b0256f) and removed the old commit that caused the regression in the first place.

*added getscroll after redrawing gop and scalars that have been changed via properties dialog in case their xy positions changed

keep [drawsymbol] and [drawnumber] from flipping with negative gop scaling
default to black fill and no stroke, per svg spec
merged transform gui updates with other attributes
fixed tags so that array elements display properly

* suppress redraws for drawing commands if the group that contains them is getting deleted

* update scalar's array elements when drawing instruction attributes or transform changes

fixed rx and ry methods, update scrollbars when scalar is displaced, and update bbox on changes to visibility and stroke-width

*patch to add [group] data structure and supporting fixes (work in progress with lingering bug of being unable to display data structure arrays properly, see tiger.pd demo patch in data structures)

- nested plots display properly
- plot is vis'd and unvis'd properly when deleting plot or struct
- commented out ugly plot_displace hack-- multiple plots should work just fine
- separated out garray dependencies into class "old_plot".  This way the changes I made don't affect garrays.  _Very_ ugly hack, but it was pretty simple to implement and will be easy to remove later.
- no crashes when non-existent arrays are entered into a [struct] that has scalars hanging around
- template_cancreate ported from 0.45
- added a function to get the offending struct (to use with "Find last error").  Not using it yet, though.
+ For creating scalars using an object box:
- scalar must have initial "float x float y" fields, in that order.  This means you can't accidentally type the name of the hidden garray structs and create a scalar.  (Nor any other structs that only have a "y" field, etc.)
- broken object box returned if the struct has a bogus array template.  (Although currently I'm just refusing to create such a struct.)

code clean-up and enabling bunch of debugging to hunt down the infinite recursion in the scalar-help.pd (select the left object and observe your own aging process)

*cannot create two structs on the same canvas (otherwise how would you know which one you are talking to)?
*fixed regression where arbitrary font sizes were not honored by the drawsymbols and drawnumbers
*other minor clean-ups
*adjusted help file to reflect the new approach to font sizes

fixed scrolling algorithm for scalars, improved scrolling logic to avoid unnecessary updates, made scrollbars wider (easier to click) and less transparent

implemented improved version of the g_scalar parsing of owner glist to adopt proper repositioning of scalars.