fixed Screenshot problem by Device-Pixel-Ratio=2.0f

#17

use Materials-0.80.1.jar

#18 JFileChooser dialog is NOT displayed when no previous records found
#35
#36

MaterialDescription in JSON is now properly escaped

#34

MaterialDescription is displayed in Materials/index.html and Materisls/misc/imageDiffList.csv

#31

sub-folders "screenshots" and "pagesources" were introduced under the Materiesl directory

#30

ImageDiffsList.ps1 with comment "# diff% 12.34"

#29

Each of Diff/Expected/Actual images are displayed with width:100% in Carousel format

#28

show diff image with width:100%

#27

Quicker instantiation of MaterialStorage by introducing 2-phase file tree scanning

include the Materials-0.78.0 to cover the fix for the issue kazurayam/Materials#36

1.20.1

Execute_twins also produces Materials/misc/imageDiffsList.ps1