oscript v1.0.6

Contains:
oscript - the ObjectScript scripting engine
ode - the IDE (src editor, debugger)
chimera - application framework

Release Notes:
+ splash screen (oohhh, aaaahhh)
+ editor
- function tree: bug fixes
- jump-to-* commands remember prev declaration when user
performs command and cursor is not over a variable
declaration/reference
- rename-reference command renames variable/function and all
references to that symbol (in same file) (uses scope rules, like
jump-to-* commands, so will not be confused by symbols declared
in different scopes but with same name)
+ fix a couple of memory leaks, paritially related to file browser
drag-and-drop support
+ introduce scipt type: WeakReference which is a proxy for it's
referent (without preventing the referent's garbage collection) until
the referent is GC'd, at which point it becomes a proxy for null