client-vertx-1.0.0-alpha-14

• Update vertx version to 3.4.2 #14
• Nondefined metric type #16
  • Allows custom metrics to not have a metric type
• Tagless metric #17
  • Allows custom metrics without tags
• Unable to set timestamp on custom metrics #18 - Allows specifying timestamp on custom metrics
• Prefix is mandatory #19 - Removes the prefix configuration in favour of namespace
• Update README #20
• Aggregations and Aggregation Frequency should be optional #25
  • Better handling of optional aggregation configurations
• Implement generic logging
  • Removes framework dependent code
• Fix tag priority when merging custom and default tags
• Support counter default configurations
• Ability to disable default aggregations for each metric type