Release 0.7.0

Beta Release 0.7.0 including:

- Bug fixes
- Updated model/function names
- Updated models to reflect changes in APIs

doc/models/liability-shift-indicator.md

@@ -9,9 +9,9 @@ Liability shift indicator. The outcome of the issuer's authentication.
 
 ## Fields
 
-| Name |
-|  --- |
-| `NO` |
-| `POSSIBLE` |
-| `UNKNOWN` |
+| Name | Description |
+|  --- | --- |
+| `NO` | Liability is with the merchant. |
+| `POSSIBLE` | Liability may shift to the card issuer. |
+| `UNKNOWN` | The authentication system is not available. |