FTP not working with older Windows FTP Servers

First off, thank you for creating this incredible library!

I'm trying to use fsspec to load data from a couple older FTP servers. They don't support the MLSD FTP command and the _mlsd2 functions seems to assume an older UNIX based FTP server.

I suppose for improving it would be to use regular expressions in _mlsd2 to "sniff" for which format it is.

Examples:

ftp.onetgov.net
fsspec URL: "ftp://ftp.onetgov.net/divisions/Infomap/pub/GIS_Downloads/FTP Shapefiles/Address Range.zip"
python FTP dir output:

09-27-20  08:55AM             56006477 Address Points.zip
09-27-20  08:55AM             12246905 Address Range.zip
04-01-20  01:46PM               189059 Adopted_Comp_Plan.zip
09-27-20  08:55AM                70271 Airport Noise Contours.zip
04-01-20  01:46PM                26766 AMA.zip
09-27-20  08:55AM               823689 Benchmarks 88 Datum.zip
09-27-20  08:55AM                 6939 Boat Ramps.zip
09-27-20  08:55AM               231407 Brownfield Areas.zip
05-31-12  02:59PM             11940688 CENSUS_BLOCKS_2010.zip
05-31-12  02:59PM              1078784 CENSUS_BLOCK_GROUPS_2010.zip
05-31-12  02:59PM               806391 CENSUS_TRACTS_2010.zip
04-01-20  01:46PM                24693 CIP_Roadways.zip
09-27-20  08:55AM              6547203 Code Enforcement Officer Zones.zip
09-27-20  08:55AM                 8551 Colleges and Universities.zip

sdrftp03.dor.state.fl.us
fsspec URL: "ftp://sdrftp03.dor.state.fl.us/Tax Roll Data Files/2020 Final NAL - SDF Files/Citrus 19 Final NAL 2020.zip"
python FTP dir output:

10-05-20  11:43AM             24041148 Brevard 15 Final NAL 2020.zip
10-05-20  11:43AM              1347717 Brevard 15 Final SDF 2020.zip
09-22-20  11:54AM             11041829 Citrus 19 Final NAL 2020.zip
09-22-20  11:55AM               513181 Citrus 19 Final SDF 2020.zip
09-27-20  08:04PM             27358206 Duval 26 Final NAL 2020.zip
09-27-20  08:04PM              1385637 Duval 26 Final SDF 2020.zip
10-01-20  02:45PM              2216030 Gadsden 30 Final NAL 2020.zip
10-01-20  02:45PM                66989 Gadsden 30 Final SDF 2020.zip
10-05-20  05:14PM              1153184 Gilchrist 31 Final NAL 2020.zip
10-05-20  05:14PM                43427 Gilchrist 31 Final SDF 2020.zip
10-02-20  04:43PM              1292859 Gulf 33 Final NAL 2020.zip
10-02-20  04:43PM                66287 Gulf 33 Final SDF 2020.zip
10-05-20  09:39AM              2596017 Hendry 36 Final NAL 2020.zip
10-05-20  09:39AM               128792 Hendry 36 Final SDF 2020.zip
09-30-20  01:20PM              9283336 Hernando 37 Final NAL 2020.zip
09-30-20  01:20PM               534406 Hernando 37 Final SDF 2020.zip
10-01-20  01:54PM              8251812 Indian River 41 Final NAL 2020.zip
10-01-20  01:52PM               390588 Indian River 41 Final SDF 2020.zip
09-29-20  10:25AM              6002346 Monroe 54 Final NAL 2020.zip
09-29-20  10:26AM               225385 Monroe 54 Final SDF 2020.zip
09-23-20  11:09AM             33846865 Orange 58 Final NAL 2020.zip
09-23-20  11:11AM              1556983 Orange 58 Final SDF 2020.zip
10-02-20  10:17AM             11778702 Osceola 59 Final NAL 2020.zip
10-02-20  10:17AM               698317 Osceola 59 Final SDF 2020.zip
10-06-20  01:57PM             41969477 Palm Beach 60 Final NAL 2020.zip
10-06-20  01:57PM              2440714 Palm Beach 60 Final SDF 2020.zip
10-06-20  12:08PM             21268245 Sarasota 68 Final NAL 2020.zip
10-06-20  12:07PM               973079 Sarasota 68 Final SDF 2020.zip
10-01-20  06:58PM             17934070 Seminole 69 Final NAL 2020.zip
10-01-20  06:58PM               948225 Seminole 69 Final SDF 2020.zip
10-02-20  10:31AM              6449364 Walton 76 Final NAL 2020.zip
10-02-20  10:31AM               366020 Walton 76 Final SDF 2020.zip

Start by reading the FTP listing logic around the _mlsd2 functions and compare it with the Windows-style dir output shown in the issue. Reproduce the listings against the two example servers if available; done means paths containing these files can be listed and accessed without requiring MLSD.