TailExpert is updated

TailExpert has been updated: latest version 1.0.7472.28493 | 6/15/2020
Version 1.0.7473.33068
 - Added option to plot histogram/piechart of keyword occurrences
 - Added option to plot graphs of values in logs 
 - Added drag n drop support
 - fixes in logformat support
 - other small fixes