Add single-click zoom capability in viewer
Updated PDF contents and changed version to 1.0.6
Create iterator.util package

- Moved Config class
- Extracted Platform enum
- Created new Subscriber interface for EventBus callbacks
Code tidy up
Change Transform fields from int to double
Fixing issues with transform id and z-order in iFS
Add toString method to models
Print IFS and size from EventBus messages if debugging enabled
Single task created during startup instead of Queue
Fix size issue when loading IFS by ignoring window chrome
Tidy up Koch curve example
Custom configuration properties files
Set colour flag if palette set
Check for empty IFS and use initial id and zIndex values
Append file extension if  missing when saving/exporting
IFS toString improvements
Document custom.properties configuration
Save stderr to explorer.log file
Allow changing palette seed during render
Code formatting