Added two benchmarks for chained and unchained ops.
Added benchmarking of max closure execution/IOPS and new FAQ item.

Eliminated the use of a std::function<> to work around ASIO's post() needing copy constructibility. Now uses a delegate instead.

Updated docs.
Added foreign fd adoption unit test.

Improved code coverage generally.

handle->close() now unmaps before close.

Added more try catching to some unit tests.
Fixed missing base name specifier.
Removed no longer necessary files.
Bumped version to 1.0
Added missing copy constructor from copyable_packaged_task.
Updated closure dispatch benchmarks with Linux results.
Merge branch 'master' into dir_monitor_functional