Develop (#37)

* Added classification from Cecilia2050

* Added Cecilia2050 in README.rst 

* Cecilia 2050 - updated EU and RoW, switched Taiwan from BX to HI

* renamed Swaziland to Eswatini, added testcase for that change

* changed Heard and Mc Donalds Islands to McDonalds, corrected official long name

* updated to version 0.6.6 - close this development sprint

README.rst

@@ -316,6 +316,7 @@ Currently the following classification schemes are available (see also Data sour
 #) OECD_ membership (per year)
 #) UN_ membership (per year)
 #) EU_ membership (per year)
+#) Cecilia_ 2050 classification
 
 
 Coco contains offical recognised codes as well as non-standard codes for disputed or dissolved countries. 
@@ -359,6 +360,7 @@ informatio about obsolete country codes on the Statoids_ webpage.
 .. _WIOD: http://www.wiod.org/home
 .. _Eora: http://www.worldmrio.com/
 .. _Statoids: http://www.statoids.com/w3166his.html
+.. _Cecilia: https://cecilia2050.eu/system/files/De%20Koning%20et%20al.%20%282014%29_Scenarios%20for%202050_0.pdf
 
 
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