Make eachcol behave like default iterator, deprecate default iterator
Update join
Merge pull request #536 from garborg/updatejoin

Update join
32-bit fixes
32-bit fixes
Fix Tests on 32bit Platform

- Change Int64->Int for general readtable() case
- Force rand to generate Int64 values due to an inconsistency in selecting
  random elements
Merge pull request #537 from fundamental/master

Fix Tests on 32bit Platform