Copyright of old three icons were unclear. New icons were added under apache license v2
diff --git a/taverna-iteration-strategy-ui/src/main/resources/org/apache/taverna/workbench/iterationstrategy/icons/crossproducticon.png b/taverna-iteration-strategy-ui/src/main/resources/org/apache/taverna/workbench/iterationstrategy/icons/crossproducticon.png
index 4627fc8..3ae1b71 100644
--- a/taverna-iteration-strategy-ui/src/main/resources/org/apache/taverna/workbench/iterationstrategy/icons/crossproducticon.png
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diff --git a/taverna-iteration-strategy-ui/src/main/resources/org/apache/taverna/workbench/iterationstrategy/icons/dotproducticon.png b/taverna-iteration-strategy-ui/src/main/resources/org/apache/taverna/workbench/iterationstrategy/icons/dotproducticon.png
index c269883..df1cfb3 100644
--- a/taverna-iteration-strategy-ui/src/main/resources/org/apache/taverna/workbench/iterationstrategy/icons/dotproducticon.png
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diff --git a/taverna-iteration-strategy-ui/src/main/resources/org/apache/taverna/workbench/iterationstrategy/icons/leafnodeicon.png b/taverna-iteration-strategy-ui/src/main/resources/org/apache/taverna/workbench/iterationstrategy/icons/leafnodeicon.png
index 36808c6..b3acf53 100644
--- a/taverna-iteration-strategy-ui/src/main/resources/org/apache/taverna/workbench/iterationstrategy/icons/leafnodeicon.png
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