[wp-hackers] readme.txt: "Requires PHP 5 tag"

[Aaron D. Campbell]

I think it would be nice to know if it's an upgrade (maybe an extra 
parameter to the activation hook), but it's definitely nice that it 
runs.  Especially for plugins that have database tables and may want to 
adjust those tables for the new version.

scribu wrote:
> On Thu, Jul 16, 2009 at 11:46 AM, Joost de Valk <joost at yoast.com> wrote:
>
>   
>> Ehm, dare I say that if it's called "activation" hook, it should not be run
>> during upgrades?
>>     
>
>
> During an upgrade, the plugin is deactivated and then reactivated, so it
> makes sense.
>