Async initialization for DateFormat

pkg/intl/data/dates/symbols/el.json

Index: pkg/intl/data/dates/symbols/el.json
===================================================================
--- pkg/intl/data/dates/symbols/el.json	(revision 0)
+++ pkg/intl/data/dates/symbols/el.json	(revision 0)
@@ -0,0 +1 @@
+{"DATEFORMATS":["EEEE, d MMMM y","d MMMM y","d MMM y","d/M/yy"],"NARROWWEEKDAYS":["Κ","Δ","Τ","Τ","Π","Π","Σ"],"STANDALONESHORTMONTHS":["Ιαν","Φεβ","Μάρ","Απρ","Μάι","Ιούν","Ιούλ","Αυγ","Σεπ","Οκτ","Νοέ","Δεκ"],"ERANAMES":["π.Χ.","μ.Χ."],"FIRSTWEEKCUTOFFDAY":3,"NARROWMONTHS":["Ι","Φ","Μ","Α","Μ","Ι","Ι","Α","Σ","Ο","Ν","Δ"],"STANDALONESHORTWEEKDAYS":["Κυρ","Δευ","Τρί","Τετ","Πέμ","Παρ","Σάβ"],"FIRSTDAYOFWEEK":0,"STANDALONEWEEKDAYS":["Κυριακή","Δευτέρα","Τρίτη","Τετάρτη","Πέμπτη","Παρασκευή","Σάββατο"],"WEEKDAYS":["Κυριακή","Δευτέρα","Τρίτη","Τετάρτη","Πέμπτη","Παρασκευή","Σάββατο"],"QUARTERS":["1ο τρίμηνο","2ο τρίμηνο","3ο τρίμηνο","4ο τρίμηνο"],"ERAS":["π.Χ.","μ.Χ."],"MONTHS":["Ιανουαρίου","Φεβρουαρίου","Μαρτίου","Απριλίου","Μαΐου","Ιουνίου","Ιουλίου","Αυγούστου","Σεπτεμβρίου","Οκτωβρίου","Νοεμβρίου","Δεκεμβρίου"],"TIMEFORMATS":["h:mm:ss a zzzz","h:mm:ss a z","h:mm:ss a","h:mm a"],"SHORTWEEKDAYS":["Κυρ","Δευ","Τρι","Τετ","Πεμ","Παρ","Σαβ"],"SHORTQUARTERS":["Τ1","Τ2","Τ3","Τ4"],"WEEKENDRANGE":[5,6],"STANDALONENARROWWEEKDAYS":["Κ","Δ","Τ","Τ","Π","Π","Σ"],"AVAILABLEFORMATS":null,"NAME":"el","AMPMS":["π.μ.","μ.μ."],"STANDALONEMONTHS":["Ιανουάριος","Φεβρουάριος","Μάρτιος","Απρίλιος","Μάιος","Ιούνιος","Ιούλιος","Αύγουστος","Σεπτέμβριος","Οκτώβριος","Νοέμβριος","Δεκέμβριος"],"SHORTMONTHS":["Ιαν","Φεβ","Μαρ","Απρ","Μαϊ","Ιουν","Ιουλ","Αυγ","Σεπ","Οκτ","Νοε","Δεκ"],"STANDALONENARROWMONTHS":["Ι","Φ","Μ","Α","Μ","Ι","Ι","Α","Σ","Ο","Ν","Δ"]}