backdoor -> coro.backdoor

terminal.handle_packet(): support ctrl-n with ctrl-p (kinda works)
__main__: use tlslite server (for security)

Note: no decoding support yet.

hixie_76: don't send pongs

after appending to the terminal, scroll cursor into view

websocket support & demos

split _ldap.pyx into coro.asn1.ber and coro.ldap.query

use cython quadtree implementation

websocket.__init__(): record the handler (for passing user/config info down)
websocket.read_thread(): catch ClosedError

backdoor.print_result(): override to print the result specially (e.g., pprint)

typo fix in emulation. ignore attribute error for socket BD settings

include emulation code