Data access by field index is broken in PgRow.

[daemas]

PgRow's get***(int index) methods are broken because the order of columns is messed up in PgRow.columns and PgRow.pgColumns.

[daemas]

It worked for me in version 0.6, but after upgrading to a newer version it stopped working. I think this happened because of the replacement of LinkedHashMap with a HashMap in PgConnection class to store information about columns. LinkedHashMap guarantees the order of the inserted elements, while HashMap does not, according to Java specification.

[RyanHoldren]

I can confirm @daemas findings. I was indeed able to fix this issue by changing the HashMap back to a LinkedHashMap in PgConnection.getColumns().

[RyanHoldren]

#51