tree e1c8912a252f835589694ef3428731cc14bc5d45
parent 277e90a4321cba6ad9f9ca4a832165265002c3a5
author dfawley <dfawley@google.com> 1493402218 -0700
committer GitHub <noreply@github.com> 1493402218 -0700

Never encode binary metadata within the metadata map (#1188)

This change ensures consistency for the user when accessing metadata values:
they are never encoded except when sent on the wire.  Previously, they would
appear encoded to client code, but not to server code.  As such, this
represents a behavior change, but one unlikely to affect user code, as it's
unusual to inspect the metadata after setting it.