PipelineDP4j with vector aggregations support

Release of com.google.privacy.differentialprivacy.pipelinedp4j v0.0.3

Release of com.google.privacy.differentialprivacy.pipelinedp4j v0.0.2

Release of com.google.privacy.differentialprivacy.pipelinedp4j v0.0.1

Privacy on Beam depends on the latest v3.0.0 version of the Go library.

Go Examples & Privacy on Beam
- Update examples to latest Go tag.
- Update privacy-on-beam to latest Go tag.

Change-Id: If95f39ce587b8c0b9e0e2f9e6bb2b9a64d4097e3
GitOrigin-RevId: 2b5046d6b8e1e09cff3d0e45fcab2ebf59359a94

Tag for Privacy on Beam at v3.0.0

Tag for Go DP Library at v3.0.0

Java and Go updates in preparation of v3 release.

Java DP:
- Update Java dependencies for v3.0.0 release.

Go DP:
- Fix examples version to work with the go tool.

Change-Id: If7d39cad87d2f416880712c78a79a2375ca93300
GitOrigin-RevId: 54a8e8833941e617e2d588868e7fd548f6bd81fe

DP Lib v2.1.0

C++ DP Lib:
* New feature: Pre-thresholding Partition Selection

Java DP Lib:
* New feature: Pre-thresholding Partition Selection
* New feature: Truncated Geometric Partition Selection

Go / Privacy on Beam:
* Internal refactorings only

Tag for Privacy on Beam at v2.1.0