Cannot get all errors on read

[anuveyatsu]

I am trying to get all TableSchemaErrors when reading a file, however, I can only get the first one. A strict option is set to false so I expect it to collect all errors instead of just stopping on the first one:

https://runkit.com/anuveyatsu/cannot-get-all-errors

Any suggestion would be helpful and I can do PR if necessary.

[roll]

MERGED
#112

Thanks.