Programmatically scroll Variables Editor

Opens a variable in the Variables Editor (grabs focus if open) and scrolls to position.

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EXISTING/NEW ISSUES (or enhancement requests):
- Please, check and report new issues to https://github.com/okomarov/scrollto/issues
- If a new issues occurs, provide all steps to reproduce it, even if it means including a "restart the pc" step.
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Opens a variable in the Variables Editor (grabs focus if already open) and scrolls to given position/subs.
Supported scrollable classes (matrices):
* numeric
* logical
* cell
* timeseries
* table (from R2013b - v2.1)
* categorical (from 2013b - v2.1)
* dataset (Statistics Toolbox)

Examples:

% Scroll a simple logical variable
a = false(1e6,100);
pos = randi(1e8,1);
scrollto('a',pos)

% Scroll somewhere else
scrollto('a',[1e5, 28])

% Wrap into a structure and scroll the indexed variable
s.foo = a;
scrollto('s.foo',pos)

% Wrap into cell and scroll with several levels of nesting
c = {s};
scrollto('c{1}.foo', pos)

% Scroll 3D array
a = rand(10,10,10);
scrollto('a(:,:,2)',[5,2])

WARNING: this code heavily relies on undocumented and unsupported Matlab functionality.

p14v2.10