Typos.
More typos.
Remove event_enable_debug_mode, made stderr buffered again.
Removed LEV_OPT_REUSEABLE
Revert "Removed LEV_OPT_REUSEABLE"

This reverts commit 7d56370113592c4577dc92bb23b771528aa6e3bd.
Various cleanups
OK, try flushing again.
Add hexdump-echo
Add writecb to try and get it to maybe actually make some output this time.
See if draining the input helps.
Try watermarks.
Other way around.
Change callbacks, set watermark, and free in writecb.
Make everything visible from readcb
Use evbuffer_add_file again.
Remove debugging.
gopher no longer uses hexdump.o; clean up Makefile, too.
Fix hexdump-echo
Really fix hexdump-echo
Fix .selectors