Change zipkin version to be the same used by appdirect

1.79

 Tag for 1.79

Added Encryption Service

1.78

 Tag for 1.78

Added tracing for outbound calls in MeteredUsageApi

1.77

 Tag for 1.77

Add "Secret" as a new parameter to MeteredUsageAPIClient

1.76

 Tag for 1.76

Adding billable attribute to MeteredUsageRequest entity

1.75

 Tag for 1.75

Adding title attribute to vendorFields Form entity

1.74

 Tag for 1.74

Reformat eventDate to 2019-10-23T09:39:12.569Z or similar

Reformat eventDate to 2019-10-23T09:39:12.569Z or similar. In order to achieve that, we need to store the ZoneId in the entity, therefore we need a ZonedDateTime for it.

Fixing eventDate serialization for UsageItem

1.72

 Tag for 1.72

Changed url to be dynamic when creating the OAuth1RetrofitWrapper

Changes the baseUrl logic so that it can be set dynamically for the API calls.

Fixed date format pattern for metered usage

1.70

 Tag for 1.70