Fix incorrect format option.

Rendering of json strings was passing control characters to a %x
formatting string, but %x only accepts Int, not Char, resulting
in an expression being thrown.
Fix incorrect format option.

Rendering of json strings was passing control characters to a %x
formatting string, but %x only accepts Int, not Char, resulting
in an expression being thrown.
Version bump for M7.6
Back to snapshot version after milestone release.
Merge remote-tracking branch 'jdegoes/master'
Merge branch 'milestones/1.0.0-Mx'