Add support for Long metric

Add support for Long metric
fix delimitedParseSpec serde
Merge pull request #19 from druid-io/fix-delimitedParseSpec

fix delimitedParseSpec serde
[maven-release-plugin] prepare release druid-api-0.2.8
[maven-release-plugin] prepare for next development iteration
update parse spec to always exclude timestamp
[maven-release-plugin] prepare release druid-api-0.2.9
[maven-release-plugin] prepare for next development iteration
clean up dim exclusions
[maven-release-plugin] prepare release druid-api-0.2.10
[maven-release-plugin] prepare for next development iteration
update java-util ver
[maven-release-plugin] prepare release druid-api-0.2.11
[maven-release-plugin] prepare for next development iteration
update maven release plugin
JSONParseSpec support for smile format
add serde test for numbers
pass down dimension exclusions to json parser
Merge pull request #20 from druid-io/json-smile-numbers

JSON smile format + numbers serde tests
update ju ver