nimPreviewHashFarm breaks concatenation test

[c-blake]

The error more specifically is this one:

tests/test_ziparchives_read.nim(46, 5) `entry == entries[numEntries]`

I don't understand why zip file catenation would depend upon string hasher order, but it is one of a couple things holding up activating nimPreviewHashFarm by default. So, if you could look into it soon, that would be awesome.

[guzba]

The issue here is that the test assumed the Table order was stable, but really I should use OrderedTable. I'll have a fix for this tagged in a little bit.

[guzba]

Tagged in https://github.com/guzba/zippy/releases/tag/0.10.14

[c-blake]

Thanks, for the quick work, man, esp. for the rapid release tag.