add crimea examples

test/data/crimean-war.csv

@@ -0,0 +1,25 @@
+date,army,disease,wounds,other
+1854-04-01,8571,1,0,5
+1854-05-01,23333,12,0,9
+1854-06-01,28333,11,0,6
+1854-07-01,28772,359,0,23
+1854-08-01,30246,828,1,30
+1854-09-01,30290,788,81,70
+1854-10-01,30643,503,132,128
+1854-11-01,29736,844,287,106
+1854-12-01,32779,1725,114,131
+1855-01-01,32393,2761,83,324
+1855-02-01,30919,2120,42,361
+1855-03-01,30107,1205,32,172
+1855-04-01,32252,477,48,57
+1855-05-01,35473,508,49,37
+1855-06-01,38863,802,209,31
+1855-07-01,42647,382,134,33
+1855-08-01,44614,483,164,25
+1855-09-01,47751,189,276,20
+1855-10-01,46852,128,53,18
+1855-11-01,37853,178,33,32
+1855-12-01,43217,91,18,28
+1856-01-01,44212,42,2,48
+1856-02-01,43485,24,0,19
+1856-03-01,46140,15,0,35