I'm not sure how useful it is to keep this information in the README.
Also, add missing EastAsianWidth.txt.
BidiBrackets.txt
http://www.unicode.org/Public/UNIDATA/BidiBrackets.txt
-2017-04-20
+2021-06-30
BidiMirroring.txt
http://www.unicode.org/Public/UNIDATA/BidiMirroring.txt
-2017-04-20
+2021-08-08
IVD_Sequences.txt
http://www.unicode.org/ivd/
-2016-08-15
+2020-11-06
UnicodeData.txt
http://www.unicode.org/Public/UNIDATA/UnicodeData.txt
-2017-03-07
+2021-07-06
Blocks.txt
http://www.unicode.org/Public/8.0.0/ucd/Blocks.txt
-2017-04-20
+2021-01-22
NormalizationTest.txt
http://www.unicode.org/Public/UNIDATA/NormalizationTest.txt
-2017-03-08
+2021-05-28
SpecialCasing.txt
http://unicode.org/Public/UNIDATA/SpecialCasing.txt
-2017-04-20
+2021-03-08
emoji-data.txt
https://www.unicode.org/Public/14.0.0/ucd/emoji/emoji-data.txt
2021-08-26
+
+EastAsianWidth.txt
+https://www.unicode.org/Public/UNIDATA/EastAsianWidth.txt
+2021-07-06