Official version history and changelog information for Surfer (2020). 

Surfer 19.1.189 (August 31, 2020)

New Features and Improvements

• 3D View: 3D PDF Export
• 3D View: Enable Undo
• Attribute Table: copy/paste the headers with rows
• Attribute Table: import attributes from file (Join)
• Attribute table: Sort by attribute value by clicking column header
• Attribute Table: update the color of selected cells/rows
• Base map: select only objects in base layer when in edit mode
• Convert grid-based layer types
• Coordinate System: Add CRTM05 (Costa Rica, EPSG 5367)
• Coordinate System: Add Palestine 1923 Palestine Belt and Palestine Grid (EPSG 28191, 28192)
• Coordinate System: add the FIPS code to each SPCS zone
• Copy/Paste Format: include Classed Post Map class mins/maxs
• Drag and Drop files into Surfer window to open as map
• EMF Export: rotated text is exported as polygons and polylines when exporting in map units (but not paper space) or paste as EMF
• File | Open: open files as a map instead of opening in Grid Editor or the Worksheet
• Grid operations: make "Add grid as layer to" checkbox persistent
• Make contouring faster with large grids
• New Base Symbology: Charts: Pie map
• Open more than one file at a time with File | Open (SRF, DAT, GRD)
• Post Map and Classed Post Map: add Data Exclusion Filter
• Post Map, Classed Post Map and Base from Data: Edit Data option to open data in the workshseet
• Save As dialog: remove extension from autofilled file names
• Share grids/files in background so don't have to load multiple times
• SRF Thumbnail Previews
• Undo: Previous View (Zoom Previous)
• Update map Scale and Scale Bar when drag selection handles to resize map

Fixes:

• 3D View: 3D points: does not update when add new points
• 3D View: Axis Labels: add Thousands separator decreases font size
• 3D View: copied/pasted/moved point still uses XY location of original point
• 3D View: Lat/long point data layers disappear when reprojected to linear
• 3D View: point Density limiting points incorrectly
• 3D View: post map symbols do not appear in 3D when there's only one point
• 3D View: Z Axis scaling is not updated when point Density is changed (Z axis goes to infinity)
• Automation: GridData3 is not sending parameters for grid size and blanking
• Base Symbology: Un/Classed Symbols and Unclassed Colors: colormap uses 0-1 for data min/max instead of attribute range when there's no variation in the data
• Contour maps are limited to grids no larger than 65535 nodes on a side (incorrect fill)
• Crash after selecting JPG in the Select Format dialog
• Crash when duplicate a contour layer
• Crash when pasting multiple cells from worksheet to Attribute Table
• Defaults: Post Map pFont properties aren't applied
• Defaults: Post Map pLabCol does not set label column
• Defaults: Post Map pPosType doesn't work
• Double click on BAS opens empty Scripter
• Drop Shadow: positive and negative offsets are applied in the same direction
• GridTIFF import: XY ranges are shifted slightly
• Incorrect contours near blanked saddle points
• Internal Error when gridding with Local Polynomial with No Search (localpolynomialgridder.cpp)
• Internal error when opening the math text editor (mtxmetrics.cpp)
• Internal Error when using Grid Calculus (calculus.cpp)
• KML import: embedded image isn't imported in the correct location
• Options: Post map labels don't use default Font properties
• Post Map: colormap data limits change when replacing data file
• Print Preview is wrong when Print method is set to View
• Set Limits: Limits reverted to default if you click in Properties and then apply the limits and change the scale.
• SRTM WCS server is downloading grids with Z range of 0 to 1

Surfer 18.1.186 (June 8, 2020)

Fixes:

• Automation: Can't call MapFrame overlays if a map layer is selected in the UI
• 3D View: surface shading is all black
• TIF import: use datum ellipsoid as projection ellipsoid, if no projection ellipsoid is found
• Surfer Error occurs when loading base layers in particular order
• Base map: can no longer group groups within a base layer
• Vector PDF: transparency and image contrast aren't exported correctly
• Base(vector): Info: Cannot enter attributes values for new objects
• Paste: doesn't go in center of page anymore
• Pasting contour map and Undoing doesn't undo the paste (it just removes the color from the contours)
• Entire map is pasted into Base layer
• GeoTIFF: importing at grid corners instead of grid cell centers
• KML Import: reading apostrophe ' as '
• Internal Error after pasting a map in base layer (transformer.cpp)
• Internal Error when gridding data (searchtableau.cpp)
• Internal Error after undoing map create (scenelist.cpp)
• Internal Error after updating properties (pmplotdocinterface.cpp)
• Internal Error with undo deleting (scenelist.cpp)
• Internal Error when creating 3D View when using Parallels for Mac (vlrenderer.cpp)
• Crash when drag object in Contents window from plot document into base layer
• Crash when gridding was cancelled
• Crash when create 3D View 
• Crash when opening a corrupt v12 SRF file instead of issuing error

Surfer 18.0.160 (April 5, 2020)

New features and improvements:

• 3D View: export to image file (TIF, JPG, PNG, BMP, etc)
• 3D View: Vertical Exaggeration: add 'Reset' button
• Attribute Table: is much faster when there are thousands of attributes
• Attribute Table: do not alphabetize added attributes
• Attribute Table: edit the ID field contents to rename an object
• Base Layer: set the coordinate system for a base layer when in edit mode
• Base Layer or Group: Start/Stop Editing not required to edit or add objects
• Base Layer or Group: indicate which layer is in editing mode in Contents window
• Base Layer or Group: Zoom selected to zoom to selected object in base layer or group
• Base Symbology: Unique Values: save/load table of values and properties
• Contents: select multiple map layers and delete
• Contents: select multiple map layers and reorder within map
• Contents: select multiple objects and toggle visiblity
• Digitize: keep red crosses on plot when clicking inside Digitized Coordinates window
• Export: select and export individual map layers, not the entire map
• Export: select and export individual objects in base layer, not entire map/layer
• Image: Crop
• Image: Set Transparent Color
• Map Measure: allow when in edit mode for a base layer or a group
• Map New or Map Add: select multiple files (data, base, grid) at once
• Profile: create profile from any polyline in any Base layer
• Ribbon: Features: move Split and Combine into New Features group
• Scale Bar: convert Linear units for labels (e.g. meters to km, feet to miles, etc)
• Scale Bar: link Cycle Spacing to Label Increment by default
• Scale Bar: Title and Labels use different Font properties
• Shapes (rectangles, rounded rectangles and ellipses): create as polygons
• Shapes: allow to use with Move/Copy to Layer and Duplicate
• Shapes: convert to polyline
• Shapes: draw in a base layer when there's a geotransform
• Shapes: label with attributes when in a base layer
• Shapes: Split and Combine them
• Shapes: use with Grid Volume, Grid Data, and Assign NoData
• SHP Export: export Base with numeric attributes as numeric (not text)
• Welcome dialog: Add Grid Data button

Fixes:

• 3D View: Vertical exaggeration reverted to default after 2D map change but visualization does not
• Attribute Table: empty fields should not be removed from Properties
• Attribute Table: error when try to rename field to existing name (invalid argument) and contents are deleted
• Attribute Table: Some headers appear different than others
• Base from Server: Servers unresponsive
• Base Symbology: settings are not showing up because of roundoff in attribute values
• Base Symbology: text attributes read as numeric
• Cannot connect to a specific WMS server when previous versions of Surfer could
• Cannot create more than one 3D view per SRF file
• Can't save SRF containing Point Cloud with removed criteria-selected points
• Copying/Pasting map selects all item in a map
• Crash after editing text and selecting a point
• Crash closing Surfer immediately after it starts
• Crash when access Help
• Crash when accessing the Colormap Editor
• Crash when clicking on a worksheet window
• Crash when export
• Crash when opening 3D View
• Drop Shadow: Secondary shadow is created upon export
• Error on startup: "Numbers may not have leading zeros at line xx"
• Geode:Server error: Parameter ‘layers’ contains unacceptable layer names
• Grid Data: Faults aren't created in map created from Grid Data wizard (but reload makes it appear)
• Grid Data: Variogram: Filter Data does not apply to modelling page
• Gridding: Data filtering not working properly
• Hide labels for base objects that are invisible
• Internal Error (tristripper.cpp)
• Internal Error after undoing a post map creation (stack.cpp)
• Internal Error during Grid Data in Cross Validation with Triangulation or Natural Neighbor (delaunaytriangulation.cpp)
• Internal Error when doing action between double clicking text (mtxelements.h)
• Internal Error when editing post map (stack.cpp)
• Internal Error when enter Math Text Editor (mtxelements.h)
• Internal Error when exporting to a vector format (e.g. PDFv, GSB, BLN, etc) (trgraphics.cpp)
• Internal Error when gridding data using kriging (kriginggridder.cpp)
• Internal Error when saving a file (attribute.cpp)
• Map Wizard: Advanced gridding: error xMin must be <xMax but data grids fine with Simple or in Grid Data
• PDF Export: vertical transform not honored for color relief layers
• Profiles: Adding georeferenced layer to unreferenced map with profile creates looping errors
• Query not selecting correct objects using Text attributes
• Reload data while editing base layer loses track of editing list