Merge pull request #608 from wwilson/metadata-v2

Register fdb
Tag NMF v0.2.0
Tag Images v0.2.25
Merge pull request #609 from timholy/pull-request/4461ace7

Tag Images v0.2.25
Tag Blocks v0.0.2
Merge pull request #610 from tanmaykm/pull-request/d19bb5b8

bump Blocks sha1
fixed Blocks sha1
Tag DimensionalityReduction v0.1.0
Tag PowerSeries v0.1.4
Tag MLBase v0.3.2
Merge pull request #611 from jwmerrill/metadata-v2

Tag PowerSeries v0.1.4