Feature: inclusive when selecting from date

[TheSquiffy]

When selecting records with date range functions (before/after) we can't set equivalent wp__query inclusive="true", so border days are left out.

This option should be easly implemented with inclusive="true" as pass through or it could be shortened with something like before="+YYYY/MM/DD" / after="+YYYY/MM/DD"

I perfectly understand that one could use to set a day more/less in options but I'm currently wrapping from php code and this forces me to convert the string to date, add/subtract 1 day and go back to string... which is not very comfortable :-)

Thanks

[picandocodigo]

Need to check this, it should be easier to implement now in the date include.