file ending conventions and trailing whitespaces

tests/resources/cov_matrix.csv

@@ -93,4 +93,4 @@ M:CPXIX,0.006731554,0.004146445,0.004330183,0.004723369,0.005645163,0.002298145,
 M:SWVXX,-5.69E-07,3.96E-06,5.86E-06,-3.90E-05,2.34E-05,-2.07E-06,1.46E-05,1.18E-05,1.97E-05,2.91E-05,-2.90E-05,1.74E-05,1.87E-05,2.00E-05,1.58E-05,8.54E-06,2.29E-06,1.33E-05,-1.08E-05,4.64E-06,9.97E-06,2.19E-05,5.92E-06,4.88E-05,9.92E-06,5.29E-06,1.88E-06,1.14E-05,6.59E-06,2.00E-05,8.77E-06,-1.72E-05,2.37E-05,1.33E-05,4.30E-06,1.21E-05,5.16E-06,1.41E-05,3.46E-05,-2.21E-05,1.94E-05,6.87E-06,5.64E-06,-1.86E-06,6.95E-06,1.42E-05,1.61E-05,-3.10E-06,-2.75E-05,1.51E-05,1.45E-05,-6.10E-05,1.67E-05,4.85E-05,1.43E-06,1.20E-05,9.76E-06,-5.40E-06,2.98E-06,8.26E-06,1.56E-06,-2.59E-06,9.51E-06,8.00E-06,6.94E-06,3.95E-06,6.10E-06,1.22E-05,7.41E-06,1.81E-06,7.13E-06,8.79E-06,9.29E-06,4.11E-07,2.85E-06,1.51E-05,1.13E-05,4.21E-06,4.42E-06,1.36E-05,-8.46E-08,1.10E-05,4.99E-06,9.00E-06,1.06E-05,-6.89E-06,-9.07E-06,-6.25E-07,1.67E-06,9.87E-06,-6.77E-06,2.80E-06,8.78E-06,9.26E-06,1.47E-05
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