yes I unterstand the build number and of course not every version should be in the change log. But every version which can be downloaded from the website should be there and the .250 was available via your website in the last week but is not in the Change-Log.
If you make a new build this is not available for us. Or do you deploy every build directly to the website? I don't think so.
And from 2.0.401.229 to 2.0.402.250 there were a lot of changes. But only the newer .252 is in the Change-Log. Maybe nothing has changed in the .252 against the .250 but I cannot see that but I have installed the .250 on two machines an have downloaded this version directly from your website.