Cannot use default parameters on init method

[supercooldave]

Using default parameters on the init method results in compilation errors. For example,

local class A
  -- does not compile
  def init(i : int = 0) : unit
    println(i)
  end
  
  -- compiles and works
  def other(i : int = 0) : unit
    println(i)
  end
end

results in error:

"Init.enc" (line 3, column 3)
Constructor method 'init' can only be called during object creation
In expression: 
  this.init(0)
In expression: 
  return(this.init(0))
In method '_init1' of type 'unit'
In class 'A'

This is undoubtedly due to the way methods using default parameters are compiled, which is incompatible with the restrictions on init.