Add accept_path() method to check if a path should be accepted according to the exclude filters.
Add -e/--exclude option to define exclude filters with regular expressions.
Add -i/--insensitive option to use case-insensitive regular expressions.
Add -i/--insensitive to use case insensitive regular expressions.
Add -E/--extended to use extended regular expressions.
Remove open file limit in kqueue_watcher.cpp.
Update man page to reflect the addition of -i and -E.
Add AC_CHECK_HEADERS([unordered_set]).
Typedef fsw_set to std::unordered_set when available, otherwise to std::set.
Add fsw_set.h to fsw_SOURCES.
Use sets instead of maps when feasible.
Update man page to reflect the addition of -i/--insensitive.
Update NEWS and ChangeLog.
Fix imports for platforms not defining std::unordered_set.