Roll Observatory packages and add a roll script

intl/lib/src/data/dates/symbols/af.json

Index: intl/lib/src/data/dates/symbols/af.json
diff --git a/intl/lib/src/data/dates/symbols/af.json b/intl/lib/src/data/dates/symbols/af.json
deleted file mode 100644
index f0a0a771de4691ab18e8affb7847c6fdb722e924..0000000000000000000000000000000000000000
--- a/intl/lib/src/data/dates/symbols/af.json
+++ /dev/null
@@ -1 +0,0 @@
-{"NAME":"af","ERAS":["v.C.","n.C."],"ERANAMES":["voor Christus","na Christus"],"NARROWMONTHS":["J","F","M","A","M","J","J","A","S","O","N","D"],"STANDALONENARROWMONTHS":["J","F","M","A","M","J","J","A","S","O","N","D"],"MONTHS":["Januarie","Februarie","Maart","April","Mei","Junie","Julie","Augustus","September","Oktober","November","Desember"],"STANDALONEMONTHS":["Januarie","Februarie","Maart","April","Mei","Junie","Julie","Augustus","September","Oktober","November","Desember"],"SHORTMONTHS":["Jan","Feb","Mar","Apr","Mei","Jun","Jul","Aug","Sep","Okt","Nov","Des"],"STANDALONESHORTMONTHS":["Jan","Feb","Mar","Apr","Mei","Jun","Jul","Aug","Sep","Okt","Nov","Des"],"WEEKDAYS":["Sondag","Maandag","Dinsdag","Woensdag","Donderdag","Vrydag","Saterdag"],"STANDALONEWEEKDAYS":["Sondag","Maandag","Dinsdag","Woensdag","Donderdag","Vrydag","Saterdag"],"SHORTWEEKDAYS":["So","Ma","Di","Wo","Do","Vr","Sa"],"STANDALONESHORTWEEKDAYS":["So","Ma","Di","Wo","Do","Vr","Sa"],"NARROWWEEKDAYS":["S","M","D","W","D","V","S"],"STANDALONENARROWWEEKDAYS":["S","M","D","W","D","V","S"],"SHORTQUARTERS":["K1","K2","K3","K4"],"QUARTERS":["1ste kwartaal","2de kwartaal","3de kwartaal","4de kwartaal"],"AMPMS":["vm.","nm."],"DATEFORMATS":["EEEE dd MMMM y","dd MMMM y","dd MMM y","y-MM-dd"],"TIMEFORMATS":["h:mm:ss a zzzz","h:mm:ss a z","h:mm:ss a","h:mm a"],"AVAILABLEFORMATS":null,"FIRSTDAYOFWEEK":6,"WEEKENDRANGE":[5,6],"FIRSTWEEKCUTOFFDAY":5,"DATETIMEFORMATS":["{1} {0}","{1} {0}","{1} {0}","{1} {0}"]}