Regex Redirect Types

[DNYLA]

Previously during the development of Regex Redirects the default redirect type was set to permeant. This was changed with this 95459dc PR which was apart of the regex redirect branch.

Is their a reason for not allowing regex redirects to have the option between permeant or temporary similar to how normal redirects work? I know that Regex redirects are in beta but from the code the change should be similar to normal redirects so I can take a look at it if there isn't a reason behind forcing them to temporary.