size of crash report line

[paul-mhq]

Crash reports are formatted with something like

format_reason(Reason) -> {Str, _} = lager_trunc_io:print(Reason, 500), ...

It would be nice if the 500 were configurable. I had a program failure that dumped a largish structure where I needed 1K or so to figure out what was wrong. It's pretty common to have a few dozen levels of backtrace before finding the higher level place where the program is crashing, so I actually think 500 is too small a default except in cases where processes are crashing fast and repeatedly. If crashes are occasional and abnormal, it's ok to dump a few kilobytes for each one.

[MSch]

:thumbsup: had to patch that manually just now

[jadeallenx]

This should be modified in a future release to be more configurable.

[jadeallenx]

This is still at the top of my TODO list. These limits ought to be more configurable than recompiling trunc_io.erl

[jadeallenx]

Dup of #211