new functions:
$Abs(number)
$Now(): returns current local date/time. date/time format depends on your windows regional settings, eg. 12/31/2018 12:59:59 pm. it seems that there is a bug in mb for functions without parameters mb now adds ")" to returned value. hope Steven will fix it soon.
$AddDuration(duration1,duration2): duration format is similar to date/time format without "am/pm" suffix, but allowed values are different, eg. 00/01/0000 00:00:00 is valid duration, but not valid date/time. either date part or time part can be omitted, it will be defaulted to zero value.
$SubDuration(duration1,duration2)
$SubDateTime(datetime1,datetime2): returns duration between datetime1 and datetime2. for datetime1 and datetime2 either date part or time part can be ommited, it will be defaulted to current date or time 00:00:00 am.
$NumberOfDays(datetime1,datetime2): returns number of days between datetime1 and datetime2 rounded down to nearest integer value.
$AddDurationToDateTime(datetime,duration)
$SubDurationFromDateTime(datetime,duration)
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still to do: make date added tag writable.
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http://www.mediafire.com/file/zvdnpbsrky8dg7a/mb_TagTools_2018-02-14.zip