Pokemontcgsdk

This release supports Cardmarket pricing which is now available in the API.

Closes 10

Version 3.0.0 also officially supports version 2 of the API.

This has breaking changes. where clauses are no longer chained together in favor of a single where clause that takes a hash. There is no need to call all after the where.
Example:
V1:
`Card.where(supertype='pokemon').where(types='psychic).all()`

[NEW] V3
`Card.where(supertype='pokemon', types='psychic')`

The 1.4.0 package on Pypi had some issues. This new package should resolve any installation issues.

Added the following field missing from Card

evolves_from

Added the following fields missing from Set

ptcgo_code
symbol_url
logo_url