Some refactoring of repository directory structure. Added ioflo.aid as
sub-package for utility modules. Started moving some stuff out of .base
into .aid. Left reference in .base for now but deprecated in future.
ioflo.base.nonblocking is deprecated use ioflo.aid.nonblocking instead
Added support for nonblocking tcp/ip and tcp/ip + tls client and server classes
in aid.nonblocking
Added support for nonblocking http client in aid.httping
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201503XX
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