# 0.23.2.0¶

## Apps¶

• Stats
• Fixed bug which caused errors when there were no items to print in a particular category (#1667).
• Added -performanceMonitor flag, which outputs in depth statistics for use in analysing and optimising performance (#1668).
• Added -image flag for outputting image statistics (#1680).

## UI¶

• Added back “Remove Input” menu option for promoted plugs. This differs from the “Unpromote” option in that it breaks the connection but keeps the promoted plug on the outside of the box (#1678).
• NodeGraph (#1679)
• Tightened rules for inserting nodes into noodles. Nodes are now only inserted when disabling the inserted node would create a pass-through equivalent to the original connection, and deleting the node will restore the original connection. Previously nodes could be inserted in such a way that one end of the connection was broken, or two new connections were made which had no logical in->out connection through the inserted node.
• Stopped highlighting connections when hovering in their middle, where they cannot be dragged anyway.
• Made it harder to accidentally drag a long connection by grabbing it in the middle - the sensitive section is now limited to a shorter segment near the end.

## Scene¶

• Improved output of objects and transforms which are static, but for which motion blur has been requested via StandardAttributes. Motion blocks are now omitted when no motion is detected (#1662).
• ScriptProcedural (#1676)
• Fixed clearing of caches after procedural expansion in Arnold.
• Improved error reporting to include the node which caused the error.
• Added support for performance monitoring.
• StandardOptions
• Added new performanceMonitor option, which enables/disables the performance monitoring now supported by the ScriptProcedural (#1676).
• Duplicate
• Optimised set name computation. This knocks 35% off the time to compute a set in a custom downstream node with certain suboptimal qualities (#1682).
• Fixed hangs caused by missing GIL management in SceneAlgo bindings (#1686, #1687).

## Dispatch¶

• ExecutableNodes now support automatic substitution of variables in StringPlug values, in the same way as has always been supported by other node types (#887, #1671).
• Fixed order of dispatch when postTasks exist (#1675).

## Arnold¶

• Removed use of deprecated UI APIs. Specifically, PlugValueWidget.registerCreator() has been deprecated, and all code should use the equivalent “plugValueWidget:type” metadata instead (#1673).

## Cortex¶

• Fixed UI error when launching a ClassVectorParameter UI with preexisting child parameters (#665, #1670).

## Documentation¶

• Added GafferDispatch to the API docs.

## API¶

• Added Process and Monitor classes. Processes expose internal processes such as ComputeNode::compute() and ComputeNode::hash() to Monitors - classes which can observe the internal workings of Gaffer via the exposed Processes (#1668).
• Added PerformanceMonitor class. This uses the Monitor/Process API to collect statistics useful in analysing and optimising performance (#1668).
• RendererAlgo
• ValuePlug
• Deprecated inCompute() method - use Process::current() instead (#1668).
• FormatData
• Added workaround for unstable hash() method when compiling with GCC 4.4.7 (#1669).
• ExecutableNode
• Moved public interface to TaskPlug. The ExecutableNode virtual interface is now considered to be protected, and will be made so in a future release.
• ScenePlug
• Fixed python binding for pathToString().
• Added helpers for accessing globals and set names. These manage the context such that it is friendlier to the hash cache, by removing variables we know to change frequently but which cannot affect the result #(1683).

## Build¶

• Updated Cortex to version 9.8.0.
• Updated Appleseed version to 1.4.0-beta.