Changes from v2.0.3 to v2.1.0
New Nodes

• Set of PCA nodes (PCA, PCA Compute, PCA Apply)
• New Statistics Node with median and co-occurrences count
• Unpivoting node
• Double To Int node
• HiLite Collector node
• R and Weka model Reader/Writer nodes
• Distance Matrix Reader/Writer + Calculate nodes
• k-medoids node
• Set of hierarchical clustering nodes (Hierarchical Clustering, Apply, and
  View)
• libSVM integration
• Rule Visualization node
• Timeseries support and nodes part of KNIME product
• Row splitter node (row filter with 2nd outport)
• Webservice client (available on KNIME labs)
• Image processing nodes (aslo available on KNIME labs)

New Features

• Support for Workflow Groups
• Workflow Meta-Infos
• Undo/Redo functionality
• Support for external application view (no Swing-NodeViews)
• Find & Find Next in Interactive Table and Table output view
• Variables Button for some controls in selected nodes (e.g. k-means)
• Java Snippet with Array-Support
• Finalized PMML support (producer&consumer) for Decision Tree Learner & Predictor
• Asynchronous table writing
• Product with export/import wizard for preferences
• Workflow variables (in expert mode)
• Outport view tab to inspect flow variables (in expert mode)
• Control the execution of a workflow from within the workflow projects view

Bugfixes and Enhancements

• Bug 1239: FileReader column delimiter not committed
• Bug 1288: Preference page should not overwrite manually set env variables (maxThreads, e.g.)
• Enh 1309: Hilite Filter node does not show progress
• Enh 1388: Review some (learner) nodes which allow a filtering of the input columns
• Enh 1403: Sorter should allow sorting by row key
• Enh 1419: ColumnFilterPanel should provide checkbox to keep all columns selected when the input changes
• Enh 1441: Category in Node Repository need cleanup (too many nodes in one category)
• Enh 1521: Linear and Polynominal Regression node should use all num. columns
• Enh 1564: Cross validation needs stratified sampling
• Enh 1579: StringToNumber node needs option to convert to integers
• Enh 1598: Support for external application views (not KNIME views)
• Enh 1604: Workflows should be annotable (user comments)
• Enh 1607: Data Output/Table View should be searchable (Ctrl-F)
• Enh 1616: Writer nodes should prevent unintentional overwrite (as option in dialog)
• Enh 1632: Import workflow - "copy workflow" should be enabled by default
• Bug 1637: GroupBy node does not take changing column type into account
• Enh 1638: Need Workflow meta information with wf-creation/modification time stamp
• Bug 1647: Many2One node fails when column already exists
• Enh 1649: Database Reader and Writer node should support timestamp, date and time fields
• Bug 1658: Java Snippet Node accepts empty strings for new column names
• Bug 1668: Master key dialog's text fields are enabled but they shouldn't
• Enh 1671: Scorer Node should output quality metrics
• Bug 1681: Dialog showing workflow loading errors is confusing
• Bug 1691: Definition of new category before 'IO' leads to strange effects
• Bug 1698: Can't reset meta node unless all contained nodes are executed
• Enh 1702: Output table of the GroupBy node should retain original row order
• Bug 1738: Problems with MySQL and Database Reader node
• Enh 1746: New Statistics node with median and co-occurrences count
• Enh 1747: GroupBy node aggregation without group column
• Bug 1749: ThreadPool creates too many threads under stress
• Bug 1758: Loop end stays queued if executed but not properly connected (two start nodes)
• Bug 1774: Concatenate node needs HiLiteTranslator
• Enh 1776: KNIME should not redirect java.io.tmpdir (at least not rely on it)
• Enh 1777: Using long sequence of exec.createJoinedTable() is not practical
• Bug 1780: Node icon does not show icon/background during deletion
• Enh 1796: Naive Bayes needs Laplace Corrector and Threshold for nominal values
• Bug 1809: Sorter ignores memory settings on output table
• Bug 1817: Renaming workflow brings up the "closed" icon in the project navigator
• Bug 1828: R Predictor default script without data.frame RDATA
• Bug 1834: Line Plot node does not update colors
• Enh 1836: The name/description wizard should say "Custom name" instead of "User name"
• Bug 1840: CSV Writer: write header check boxes don't work as expected
• Enh 1847: Masterkey prompt should have different layout when querying password
• Bug 1849: Weka DecisionTable throws NotSerializableException
• Bug 1854: Closing the WorkflowEditor sometimes causes NullPointerException
• Bug 1857: WorkflowManager occasionally drops node directories upon save
• Enh 1863: CSV Writer does not append file extension automatically
• Bug 1872: ScopeVariable Settings "knime..." are not loaded when edited via button.
• Bug 1880: Regexp split node ignores non-capturing groups and throws NPE
• Bug 1884: Closing sub flow editor brings up "save" prompt
• Enh 1891: Database Query node support for table alias
• Bug 1892: Database Query node SQL query not generated correctly
• Enh 1896: NodeModel should not create warning if table has no columns
• Bug 1897: Pivot node is not configurable without double-value column
• Bug 1914: FileUtil#zipDir creates ZipEntry names with backslashes
• Bug 1922: Portview should be restored and set to front if already open
• Bug 1924: Renamed workflow project does not change name in workflow.knime
• Bug 1925: SDF type identification problem
• Enh 1936: PDF and HTML Writer need "Overwrite OK" option
• Bug 1939: DataType: Invalid preferred value class: StringValue
• Bug 1952: Canceling loop (in meta node) causes IllegalStateException
• Bug 1954: GroupBy node looses user settings when re-connected to new input
• Enh 1955: ColumnFilterPanel needs better layout
• Bug 1959: FlowVariables (constants in particular) are duplicated when node contains two input ports
• Bug 1966: Node snaps to left upper corner when dragged onto workbench
• Bug 1976: Too many splash extension icons (>8) ruin the splash screen
• Bug 1979: R node doesn't delete stderr file from previous run
• Bug 1993: SD reader says "Could not extract properties: null" in dialog
• Bug 1995: Oracle driver does not work (NPE)
• Bug 1996: NPE in Joiner (or Sorter) when joining with empty table
• Bug 2001: Database Looping node does not replace placeholder correctly during configure
• Bug 2003: SWTException when closing KNIME
• Enh 2010: Open View action (in toolbar) opens default views of all nodes in workflow
• Bug 2017: DialogComponentPasswordField does not commit during edit
• Enh 2023: BatchExecutor to support "-workflow.variable" command line argument
• Bug 2038: Correlation View not revertable using "View >> Use Colors"
• Bug 2039: CollectionCellFactory to have more flexible API (not constrained to but <? extends DataCell>)
• Bug 2040: ResultSet streaming problems with mySQL
• Enh 2043: Joiner needs adjustable row id suffix