SimEthereal version 1.5.0

Bug fixes and some overhauls of internal processing.

Change log:

• Internally moved ZoneManager creation to the EtherealHost constructor
  so that it could be accessed prior to EtherealHost service initialization.
• Refactored ZoneManager to allow different internal ZoneRange implementations.
  Renamed the old internal ZoneRange to OctZoneRange to denote that it can
  track a maximum of eight zones per object (2x2x2). This limited objects
  to never be bigger than a zone.
• Modified ZoneManager to have a new internal DynamicZoneRange that can
  support objects of virtually any size relative to zone size. (Subject
  to positional bit resolution, etc.)
• Added a (hopefully temporary) ZoneManager.setSupportLargeObjects() that
  defaults to false. When true this will use the new DynamicZoneRange.
  This defaults to false because the older (uglier) ZoneRange code has
  had a LOT more real world testing. Note: the new code is actually way
  cleaner and more elegant.
• Modified the "received acks" watchdog in StateWriter to take message ID lag
  into account. This should fix the cases where the exception would be
  thrown for cases where client ACKs are just lagging by a wide margin.
• Upgraded to SimMath 1.4.0 to get the new IntRangeSet for receved acks tracking.
• Converted the tracked ACK message ID sets to IntRangeSets for efficient storage
  and processing. (During normal processing, ACK IDs will almost always be
  a single contiguous range so a good candidate for IntRangeSet: one entry)
• Fixed a bug in SentState message writing/receiving where more than 255 ACK
  IDs was causing overflow and randomly lost acks. (Fixed by sending ranges
  instead of every individual ACK set.) This also fixed a message size
  overflow issue.