Roll Observatory packages and add a roll script

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

Index: intl/lib/src/data/dates/symbols/eu.json
diff --git a/intl/lib/src/data/dates/symbols/eu.json b/intl/lib/src/data/dates/symbols/eu.json
deleted file mode 100644
index 6713e7789cebe6d498008f7a28911c4a29b60550..0000000000000000000000000000000000000000
--- a/intl/lib/src/data/dates/symbols/eu.json
+++ /dev/null
@@ -1 +0,0 @@
-{"NAME":"eu","ERAS":["K.a.","K.o."],"ERANAMES":["K.a.","K.o."],"NARROWMONTHS":["U","O","M","A","M","E","U","A","I","U","A","A"],"STANDALONENARROWMONTHS":["U","O","M","A","M","E","U","A","I","U","A","A"],"MONTHS":["urtarrilak","otsailak","martxoak","apirilak","maiatzak","ekainak","uztailak","abuztuak","irailak","urriak","azaroak","abenduak"],"STANDALONEMONTHS":["urtarrila","otsaila","martxoa","apirila","maiatza","ekaina","uztaila","abuztua","iraila","urria","azaroa","abendua"],"SHORTMONTHS":["urt.","ots.","mar.","api.","mai.","eka.","uzt.","abu.","ira.","urr.","aza.","abe."],"STANDALONESHORTMONTHS":["urt.","ots.","mar.","api.","mai.","eka.","uzt.","abu.","ira.","urr.","aza.","abe."],"WEEKDAYS":["igandea","astelehena","asteartea","asteazkena","osteguna","ostirala","larunbata"],"STANDALONEWEEKDAYS":["igandea","astelehena","asteartea","asteazkena","osteguna","ostirala","larunbata"],"SHORTWEEKDAYS":["ig.","al.","ar.","az.","og.","or.","lr."],"STANDALONESHORTWEEKDAYS":["ig.","al.","ar.","az.","og.","or.","lr."],"NARROWWEEKDAYS":["I","A","A","A","O","O","L"],"STANDALONENARROWWEEKDAYS":["I","A","A","A","O","O","L"],"SHORTQUARTERS":["1Hh","2Hh","3Hh","4Hh"],"QUARTERS":["1. hiruhilekoa","2. hiruhilekoa","3. hiruhilekoa","4. hiruhilekoa"],"AMPMS":["AM","PM"],"DATEFORMATS":["y('e')'ko' MMMM d, EEEE","y('e')'ko' MMMM d","y MMM d","y-MM-dd"],"TIMEFORMATS":["HH:mm:ss zzzz","HH:mm:ss z","HH:mm:ss","HH:mm"],"AVAILABLEFORMATS":null,"FIRSTDAYOFWEEK":0,"WEEKENDRANGE":[5,6],"FIRSTWEEKCUTOFFDAY":3,"DATETIMEFORMATS":["{1} {0}","{1} {0}","{1} {0}","{1} {0}"]}