fixed accidental deletion

fix accidental deletion of oifoutput_comments.csv

tests/data/oiftestoutput_comment.csv

@@ -0,0 +1,12 @@
+# Comment and blank line.
+
+ObjID,FieldID,FieldMJD_TAI,AstRange(km),AstRangeRate(km/s),AstRA(deg),AstRARate(deg/day),AstDec(deg),AstDecRate(deg/day),Ast-Sun(J2000x)(km),Ast-Sun(J2000y)(km),Ast-Sun(J2000z)(km),Ast-Sun(J2000vx)(km/s),Ast-Sun(J2000vy)(km/s),Ast-Sun(J2000vz)(km/s),Obs-Sun(J2000x)(km),Obs-Sun(J2000y)(km),Obs-Sun(J2000z)(km),Obs-Sun(J2000vx)(km/s),Obs-Sun(J2000vy)(km/s),Obs-Sun(J2000vz)(km/s),Sun-Ast-Obs(deg)
+S00000t,379,59853.205174,283890475.515,-1.12,11.969664,-0.280799,-0.19939,-0.132793,426166274.581,77286024.759,6987943.309,-2.356,11.386,4.087,148449956.422,18409281.409,7975891.432,-4.574,27.377,11.699,2.030016
+S000015,60,59853.050544,668175640.541,23.682,312.82599,-0.143012,-49.366779,0.060345,444295081.174,-301086798.179,-499254823.262,1.334,2.899,-0.966,148508007.817,18043717.331,7819571.632,-4.132,27.288,11.702,11.073412
+S000015,105,59853.070961,668217448.98,23.719,312.823072,-0.142811,-49.365543,0.060665,444297433.74,-301081684.455,-499256526.686,1.334,2.899,-0.966,148500674.701,18091882.568,7840214.206,-4.183,27.32,11.702,11.074657
+S000021,413,59853.220613,516550704.766,-1.608,22.000274,-0.225825,-19.043374,-0.114463,601169059.37,201361152.513,-160550656.264,-1.298,4.684,0.933,148443823.854,18445794.747,7991497.404,-4.62,27.365,11.698,5.871856
+S00002b,572,59853.293877,160327206.556,-19.492,47.088061,0.053874,-15.880194,-0.417293,253410404.834,131561171.922,-35804271.497,-21.325,11.966,4.031,148413942.971,18618735.009,8065543.09,-4.814,27.264,11.697,21.12101
+S00002b,607,59853.309641,160300687.641,-19.449,47.088909,0.053765,-15.88677,-0.417038,253381357.222,131577470.069,-35798780.727,-21.327,11.965,4.031,148407362.475,18655848.204,8081473.717,-4.849,27.234,11.696,21.119551
+S000044,488,59853.255694,133485679.853,-9.938,33.541589,-0.262958,-9.848619,-0.485317,258048376.693,91198197.859,-14805188.544,-10.884,14.856,0.504,148429669.985,18528683.737,8026954.157,-4.718,27.326,11.698,15.524169
+S000044,530,59853.275035,133469121.466,-9.881,33.536501,-0.263144,-9.858002,-0.485061,258030186.156,91223021.757,-14804346.613,-10.887,14.855,0.504,148421743.407,18574321.785,8046500.496,-4.768,27.297,11.697,15.518087
+S000044,2500,59856.274051,131073203.027,-8.522,32.743867,-0.295536,-11.323175,-0.490697,255153184.356,95052104.237,-14670561.528,-11.319,14.698,0.529,147053806.819,25536610.427,11064715.504,-6.295,27.051,11.595,14.724322