Turn argument validation into the first hook#818
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This was referenced Feb 8, 2018
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Feathers argument validation ran outside the normal hook chain which causes a bug when the hook object is expected to be returned, e.g. in the REST and websocket API transports and it skipped error hooks. The solution was to make it the very first hook in the chain so it will be treated like any other error.
Closes feathersjs-ecosystem/express#19