eqv bug with class o examples, lexical scope operator in rakudo, OUTER, ...

report -match WHICH problem, match has no identity

why has xx doesn't work in role, should 

why can't pass role (does =>) with argument


second pass to remove references that are not refered to

user defined address name
	is some nodes are of specific importance, give them name that can be used to 
	display the reference rather than a standard @1234, eg, @important_node

eqv not implemented for Match

#color objects

#scoped filters

object size

ColorStr class
	keeps color and string separated, or colored string and length of uncolored string

#paths
	can be used in filters
	
#diff list
	can use paths

#test::compare:DDT::diff

#roles to sub dump

#filters on generic containers
!scoped filter and roles
	=> path and depth are enough for now

Requirements:

user interaction layer
	!cache
		to avoid re-generating the data
	
	representation in
		Prima, curses, gtk, dhtml, #terminal


dumper
	#options
		#max depth, ...

	name
		allow dumper to be switched on and off by name at higher level
		eg: a piece of code contains a dumper but the user wants to control
			in which scope the dump should be done		

	#handles multiple iterators
		synchronized glyphs (diff)

	#returns one or multiple "row representations"
		multiple rows have synchronization points

	#start and end tag per level
		ease generation of HTML for example

	#user defined filters

	#dumps can be gathered from multiple source dynamically
		when getting to a specific point, data is gathered from another source
		no need to create a data structure in advance
	
		=> any object can declare handler, including dynamic sources

	dump, gather, dump_gathered, reset interface.

	dumper can re-synchronize the glyphs
		if a stream ends, the glyph for the previous element
		may need to be changed	

	supports threads

	lazy row representation element generation

	can modify a previous glyph if the level after it is not the expected one
		ie, an element becomes the latest in the level

	#when dumping multiple structures simultaneously
		diff color
		diff column
		diff glyphs

#row representation
	can contain multiple fields for each data element dumped
		level, #data, #type, #inheritance, size, taint, tie, weak references, ...
	
	#user registrable representation generators
	class defined generator
		it can use this module and the glyphs get aligned properly

	colorizer
		per level
		per type

	lazy representation generation

	},

#data iterator
	from data structure
	from feeder
		ie data can come from a stream


#glyph generator
	option for different glyph representations

	generate a glyph based on a hierarchical level
		method, input level, input glyphs, output a string


