Calls fail with `--csv` due encoding errors

Running `kaggle competitions leaderboard favorita-grocery-sales-forecasting --show` works fine: and provides the expected output:

```
teamId teamName submissionDate score
------- ---------------------------- ------------------- -------
1147833 spp 2018-01-15 21:52:31 0.49787
1115911 slonoschildpad 2018-01-15 23:03:21 0.49955
1087657 Jordan Meyer 2018-01-15 23:05:52 0.50125
1048683 alijs & Lee 2018-01-15 15:49:03 0.50139
1044681 Try Our Best 2018-01-15 23:35:32 0.50165
1213853 the stooges 2018-01-15 23:19:34 0.50286
1018128 Li-Der 2018-01-12 13:34:55 0.50351
1236831 Shize Su 2018-01-15 17:35:34 0.50353
1014225 Lottery 2018-01-15 23:41:01 0.50426
1167419 Bayes tribe（贝叶斯部落） 2018-01-15 04:58:36 0.50430
1180114 JStr 2018-01-15 23:38:30 0.50436
1015234 SoLucky 2018-01-15 22:20:47 0.50444
1170633 A xiba 2018-01-15 16:22:06 0.50481
1097498 w 2018-01-15 17:33:44 0.50487
1016708 Carlos & Justfor 2018-01-15 22:41:36 0.50497
1044307 Lingzhi 2018-01-15 22:33:05 0.50525
1228185 gs_team 2018-01-15 20:10:52 0.50568
1157229 买两张彩票 2018-01-15 15:26:59 0.50581
1167983 AndreyGo 2018-01-15 17:16:00 0.50603
1055225 LazyGUY 2018-01-15 05:56:15 0.50604
1052847 x0x0w1 2018-01-14 19:55:11 0.50610
1229126 TZTZ 2018-01-15 08:47:42 0.50620
1243400 天翻地覆啊 2018-01-15 15:17:21 0.50625
1148562 Kulagin+ZavodRobotov 2018-01-15 14:09:38 0.50646
1155530 Gang of Six 2018-01-15 23:51:55 0.50673
1099514 Yuki 2018-01-15 23:26:25 0.50674
1015578 tosh 2018-01-15 17:28:18 0.50683
1054067 antklen 2018-01-15 19:50:27 0.50689
1014110 To Train Them Is My Cause 2018-01-12 03:38:16 0.50693
1026383 Louis.T 2018-01-15 06:41:56 0.50700
1042075 Eran & Nicolas & Keuipo 2018-01-15 19:50:39 0.50715
1026496 PZ 2018-01-13 22:57:03 0.50727
1122449 Andaman 2018-01-15 23:19:33 0.50746
1221867 5 Star Box 2018-01-15 10:11:01 0.50751
1134714 Yinglong Guan 2018-01-15 00:19:52 0.50765
1201835 BVoskresenskii 2018-01-15 18:59:25 0.50772
1019659 OE 2018-01-15 23:22:08 0.50772
1154986 FoxNov 2018-01-15 20:02:23 0.50779
1021698 Mengjie Liu 2018-01-14 11:12:19 0.50780
1045514 Jack (Japan) 2018-01-15 12:21:34 0.50799
1118549 Vladimir Boichenko 2018-01-14 08:55:20 0.50803
1014944 Dont't trust kernels and plb 2018-01-15 16:21:39 0.50805
1031037 Not So Favorite 2018-01-15 23:56:14 0.50810
1113925 i have no idea 2018-01-14 01:52:30 0.50816
1019416 DSEverything 2018-01-15 01:59:05 0.50822
1129251 Atanas Atanasov 2018-01-15 22:08:28 0.50828
1087389 shiMu 2018-01-15 18:23:50 0.50834
1014779 Takuya Akiyama 2018-01-15 13:02:16 0.50836
1178606 Fabio Luciani 2018-01-15 20:54:10 0.50849
1150152 mykper 2018-01-15 20:49:00 0.50849
```

However, when adding `--csv` to the command, it fails on line 10 due to an encoding error:

```
teamId,teamName,submissionDate,score
1147833,spp,2018-01-15 21:52:31,0.49787
1115911,slonoschildpad,2018-01-15 23:03:21,0.49955
1087657,Jordan Meyer,2018-01-15 23:05:52,0.50125
1048683,alijs & Lee,2018-01-15 15:49:03,0.50139
1044681,Try Our Best,2018-01-15 23:35:32,0.50165
1213853,the stooges,2018-01-15 23:19:34,0.50286
1018128,Li-Der,2018-01-12 13:34:55,0.50351
1236831,Shize Su,2018-01-15 17:35:34,0.50353
1014225,Lottery,2018-01-15 23:41:01,0.50426
'latin-1' codec can't encode characters in position 11-17: ordinal not in range(256)
```