Stricter eliding of terms

Faster string formatting

If the result of the string format was longer than the remaining length,
the returned remaining length would be negative, which would make very
strange things happen.

Fix how the name/pid of the process is printed in crash reports

Before this fix, the code assumed that processes without a registered
name omitted the {registered_name, X} tuple in the crash report. In
actual fact, process_info/2 returns [] when the process has no
registered name, so unregistered processes were being printed with a
"name" of "[]". This corrects the code to print the Pid in this case
instead.

Specifically, the handling of lists/binaries/atoms is closer to
io_lib:format's behaviour, and some regular expressions are eliminated.

Use mfargs instead of name attribute as the way to detect supervisor_bridge

Fix issue #20

Make the tests less dependant on timer:sleep()

Fix typo in README

Several fixes for printing binaries, improve quote stripping

In string mode, "..", '..' and <<"..">> are stripped, just like with
io:format.

As Ryan pointed out, the 'name' of a supervisor's child may be
'undefined' for a simple_one_for_one supervisor.

Fix term printing in errors to properly show embedded lists

The ~w formatting used before was not printing lists embedded in other
terms. This change uses trunc_io to print those terms safely and without
potentially introducing linebreaks (like ~p would)

Adt fix print bugs

The test if an element in a list was in the printable range didn't
handle the case of a float in the list that compared to be in the
printable range.

Use the io_lib_format:fwrite_g function to print floats

This is superior to float_to_list as it only prints the meaningful
digits and 1.0 isn't rendered as "1.00000000000000000000e+00".

Use lager_trunc_io:format() for all messages submitted via
lager:log().  Also, refactor list flattening and final newline
stripping into shared func that uses re:replace() to do both.