[PostGIS] #2021: [raster] Multi-band support for ST_Union

[PostGIS]

#2021: [raster] Multi-band support for ST_Union
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  Reporter:  dustymugs    |      Owner:  dustymugs
      Type:  enhancement  |     Status:  closed
  Priority:  medium       |  Milestone:  PostGIS 2.1.0
 Component:  raster       |    Version:  master
Resolution:  fixed        |   Keywords:  history
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Changes (by komzpa):

 * milestone:  PostGIS Fund Me => PostGIS 2.1.0

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/2021#comment:5>
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