v3.0: Merge pull request #25 from dranes/omnipay-v3

Add support to Omnipay v3

v2.3.1: Merge pull request #24 from Korri/patch-1

 Send CVV2 with card reference transactions

2.3

Multiple PRs merged.

2.2.2

Sending some extra fields to PayPal.

v2.2.1

Includes recent PRs, updated docblocks, Inquiry/FetchTransaction requests.

2.2.0

Add Voice Method

v2.1.1

Move to The PHP League

v2.1.0

• Add extra transaction fields
• PSR-4

v2.0.1

• Fix name value pair encoding