Prints entire XML doc in show method

[ssfrr]

If you call parse_file from the REPL and neglect to put a semicolon after, LightXML will print out the whole document. It may be better to follow the example of the Array methods and only do a partial print if there's more data than will fit on one screen.

[tkelman]

Not a bad idea, I guess. I'm not sure exactly which functions you'll need to implement to do this, maybe something with showcompact? I'd review a PR if you or anyone else can come up with something that works.

[twavv]

This is pretty important. I just tried to open some open street map data using LightXML and it crashed HARD (the file is like 200MB).

[xgdgsc]

What about saving filesize somewhere and if larger than 1MB just print a warning?

EDIT: Found XML.jl has some sane defaults.