'timestamp with time zone' for sql definition

Hi!
Will it possible to add one more datatype? I want to use 'timestamp with time zone' datatype for `created` and `lastupdated` columns. For my project I have used it like:
`
created: 'timestamp with time zone',
lastupdated: 'timestamp with time zone'
`
but it calls a warning in console: `[WARN] Using unknown data type TIMESTAMP WITH TIME ZONE`.
I think the new datatype in the datatypes would be perfect!
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