ignificantly modified command processing adding commands to access multiPing() and new arcPing() functions.
Modified multiPing() to function correctly when attempts=1.
Changed version tag from 2.0 to 2.0a to indicate that is has functional alterations since 2.0
Declared time functions as const for proper sharing.
Added command to display milli-seconds since bootback to user.
Added semi-colon as alternate terminator to #P servo position command.
Updated dox_html.zip to include description of all pertinent changes.