remove extraneous wording
implement explain as parameter instead of as command
rename some internal functions
implement Adj.getElementByIdNearby
use adj:id attribute
Remove use of adjFields object
Make more use of Adj.decimal
Optimize
Implement a first version verticalTree algorithm
Increment version number
Catch up with commits made in other directory
Provide pre-commit hook to ensure identical files
Nitpick
Implement autoParrots and earGap in verticalTree
Comment out many console.log
Change default values
Fit autoParrots for roots row
Fix case of narrow child or children
Simplify centerGap and middleGap defaults
Simplify autoParrots default