POM: simplify repositories blocks
POM: update developers and contributors

According to the Maven docs, the "developers" section is supposed to be
for active developers. Rule of thumb: people you would contact with
questions about the project. The "contributors" section is for people
who contribute(d) to the project, but who are not officially responsible
for it. So a few of the people formerly tagged as "developers" are more
properly listed under "contributors" instead.
POM: update repository URL where appropriate
POM: remove no-longer-needed configuration blocks

The removed sections have all migrated to the pom-scijava parent.
POM: use new bsd_2 license, not custom resolver

The license-maven-plugin 1.6 adds BSD-style license templates:
  https://jira.codehaus.org/browse/MLICENSE-80

With this fabulous new addition, we can eliminate our custom
license resolver in favor of the stock bsd_2 license.
Update license and file headers

This was done using:
  mvn license:update-project-license license:update-file-header

The only real change is the loss of the legal disclaimer at the bottom
of the license. This disclaimer is not actually part of the BSD-2
license proper, but rather an addendum. For relevant discussion, see:
  https://jira.codehaus.org/browse/MLICENSE-80
POM: remove no-longer-needed rootdir property

It was used only for the custom license resolver, which is now gone.
QuantileFilter operation marked as deprecated.

The operation is going to be replaced by a revised version as soon as we agreed on an ops-framework for imglib/scijava.
Update copyright headers on broken projects

Accomplished with:
  mvn -P broken license:update-file-header
Remove extraneous copyright headers
Remove leftover file from git merge
HyperSphereIteratorBehavior: fix javadoc
Merge branch 'master' into optimized-ops

Conflicts:
	core/src/main/java/net/imglib2/img/array/ArrayImg.java
	core/src/main/java/net/imglib2/img/planar/PlanarImg.java
	core/src/main/java/net/imglib2/view/IntervalView.java
	core/src/test/java/net/imglib2/IterableIntervalSubsetTest.java
	examples/src/main/java/Example3a1.java
	ops/src/main/java/net/imglib2/ops/img/ResultAsAdditionalDimOp.java
	ops/src/main/java/net/imglib2/ops/operation/interval/unary/MergeIntervals.java
	ops/src/main/java/net/imglib2/ops/operation/iterableinterval/binary/MakeHistogram2D.java
	ops/src/main/java/net/imglib2/ops/operation/iterableinterval/unary/MakeHistogram.java
	ops/src/main/java/net/imglib2/ops/operation/iterableinterval/unary/multilevelthresholder/MultilevelThresholderOp.java
	ops/src/main/java/net/imglib2/ops/operation/iterableinterval/unary/multilevelthresholder/OtsuMultilevelThresholder.java
	ops/src/main/java/net/imglib2/ops/operation/labeling/unary/MergeLabelings.java
	ops/src/main/java/net/imglib2/ops/operation/randomaccessibleinterval/binary/IterateBinaryOperation.java
	ops/src/main/java/net/imglib2/ops/operation/randomaccessibleinterval/unary/IterateUnaryOperation.java
	ops/src/main/java/net/imglib2/ops/operation/subset/views/IterableSubsetView.java
	ops/src/main/java/net/imglib2/ops/operation/subset/views/IterableSubsetViewCursor.java
	ops/src/main/java/net/imglib2/ops/operation/subset/views/SubsetViews.java
	tests/src/test/java/tests/ImgPanel.java
Merge branch 'optimized-ops' into knip

Conflicts:
	algorithms/core/src/main/java/net/imglib2/algorithm/histogram/BinMapper1d.java
	core/src/main/java/net/imglib2/labeling/LabelingView.java
	examples/src/main/java/Example3a1.java
	meta/src/test/java/net/imglib2/meta/view/HyperSliceImgPlusTest.java
	ops/src/main/java/net/imglib2/ops/operation/SubsetOperations.java
	ops/src/main/java/net/imglib2/ops/operation/iterableinterval/unary/MakeHistogram.java
	ops/src/main/java/net/imglib2/ops/operation/metadata/unary/CopyCalibratedSpace.java
	ops/src/main/java/net/imglib2/ops/operation/metadata/unary/CopyImageMetadata.java
	ops/src/main/java/net/imglib2/ops/operation/metadata/unary/CopyMetadata.java
	ops/src/main/java/net/imglib2/ops/operation/metadata/unary/CopyNamed.java
	ops/src/main/java/net/imglib2/ops/operation/metadata/unary/CopySourced.java
	tests/src/test/java/tests/XYRandomAccessibleProjector.java