use latest versions of dependencies

[cmcarthur]

psycopg2 > 2.7.1?
sqlparse > 0.2.3?
csvkit > 1.0.2?
celery? do we even use this?
voluptuous > 0.10.5
snowflake-connector-python > 1.3.16

there are other, non-explicit dependencies that should be upgraded:

cryptography > 1.8.1

[drewbanin]

Changelogs:

• psycopg2
• sqlparse
• csvkit
  • this is a major upgrade with some breaking changes to the CLI -- need to evaluate how that impacts the API
• celery - we definitely don't use this directly -- it's a dep of the snowplow module. I'll investigate if we can remove it (I think we can)
• voluptuous
• snowflake-connector-python

@cmcarthur i don't wholly understand the cryptography note -- should we add that to install_requires?

[drewbanin]

We can remove the celery dep if we upgrade snowplow-tracker to 0.8.0 but it looks like there's a dep on six=1.9.0 which makes things hard. Let's leave the celery requirement for now and revisit in the future.

[drewbanin]

Looks like csvkit's api is deprecated and we should use agate instead? Let's leave this alone for now

Help on package csvkit:

NAME
    csvkit

DESCRIPTION
    This module contains csvkit's superpowered alternative to the standard Python
    CSV reader and writer. It can be used as a drop-in replacement for the standard
    module.

    .. warn::

        Since version 1.0 csvkit relies on `agate <http://agate.rtfd.org>`_'s
    CSV reader and writer. This module is supported for legacy purposes only and you
    should migrate to using agate.

PACKAGE CONTENTS
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