Version 0.7.0 - 2017-12-??

• switch to Python3 (removing support for Python2)
• switch to GTK3 (from GTK2)
• switch OpenGL widget from GtkGLext to GLArea (part of GKT3)
• switch to new internal data handling
• enable loading and saving the workspace state (was disabled during v0.6.x)
• non-interactive batch processing allows scripted toolpath operations

Version 0.6.3 - ???

• Fix import of DXF files with full-circle holes (github #112).
• Fix import of DXF files with bezier curves (github #116).
• Fix import of DXF with closed LWPOLYLINE.
• Fix line number reporting in CXFImporter.
• Fix python2/3 compatibility in CXFImporter.
• Better tests.

Version 0.6.2 - 2017-10-27

• Bounds: disable percent-based controls for zero-dimensions
• fix toolpath grid operation (issue #45)
• prevent negative bounding box dimensions
• additional dependency 'enum34' (only relevant for Python2)

Version 0.6.1 - 2017-03-11

• GCode: limit vertical feedrate (maximum speed of plunge move)
• removed experimental support for ODE
  • the ODE library seems to be not actively developed anymore
• removed obsolete support for psyco
• prepared code for Python3
  • Python2-only dependencies are still required
• updated help locations (from the old wiki to the new documentation website)

Version 0.6.0 - 2017-02-18

• greatly improved OpenGL visualization (contributed by Mattes)
• DXF importer:
  • added bezier support for POLYLINE and LWPOLYLINE
• modularization of most features
• many more new features

Version 0.5.1 - 2011-06-13

• added extrusion for 2D models
• 2D projection of multi-layered 2D models
• significantly improved performance of 3D visualization
• fixed "help" links for Windows users
• added GTK theme with a native look&feel for Windows
• improved detection of library locations for Windows package
• added file type associations (mime) to the debian package
• minor bugs fixed

Version 0.5 - 2011-03-28

• Toolpaths:
  • added adaptive positioning for DropCutter strategy (improves precision)
  • allow conventional/climb milling style for ContourFollow and Engrave strategies
  • added a very simple "pocketing" mode for 2D models
  • added toolpath cropping
  • added toolpath grid pattern: clone a single toolpath in rows and columns
  • unify DropCutter behaviour for models that are higher than the defined bounding box
  • more efficient tool moves for Engraving
• Model handling:
  • added support for simple multi-layered 2D models
  • added 2D projection of 3D models
  • added automatic repair of inconsistent polygon winding (inside/outside detection)
  • automatically distributed support bridges can now be placed at corners or edges
• GCode:
  • added basic support for "touch off" and length compensated tool change
  • GCode positioning precision (number of digits) is configurable
  • the default filename extension for exported GCode files is now configurable
• Visualization:
  • changed "simulation mode" for visualizing the machine moves (before: material removal)
  • visualize toolpath moves up to safety height properly
  • the scroll wheel now behaves similarly to Inkscape's interface (pan and zoom)
  • optional visualization of toolpath direction
  • visualize "inside" polygons (holes) via partial transparency
• Usability:
  • added a configuration setting for automatically loading a custom task settings file on startup
  • added a simple "undo" feature for reversing model manipulations
  • enabled drag'n'drop for loading models
  • visibility of 3D view items is now configurable in the 3D window
• via a button and via the context menu
  • added copy/paste of model to and from the clipboard
• Distributed processing:
  • parallel and distributed processing is configurable in a dialog
  • improved stability of remote processing: disconnected nodes should not cause problems anymore
• Miscellaneous:
  • added support for single-line fonts text (based on fonts from QCAD)
  • support non-local file handling (e.g. http, ...)
  • added support for more DXF features:
• 2D: LWPOLYLINE, POLYLINE, CIRCLE, ARC, TEXT, MTEXT
• 3D: 3DFACE
  • added support for EPS/PS contour files
  • fixed offset of SVG export
• noteworthy changes:
  • bounding box for 2D models must be above the model (before: below or above)
  • simulation mode: the stock material removal simulation was removed

Version 0.4.0.1 - 2010-10-24

• disabled parallel processing for Windows standalone executable (a real fix will follow later)

Version 0.4 - 2010-10-19

• use all available CPU cores for parallel processing
  • this requires at least Python 2.6 or the "python-multiprocessing" package
• a standalone windows executable is available (experimental)
• added an improved contour toolpath strategy (ContourFollow)
  • see http://fab.senselab.org/node/43
• added options for conventional/climb milling
• added automatic support grid distribution for contour models
• allow to reverse the direction of a 2D contour model
• beautification of the process name (via python-setproctitle)
• added experimental cluster processing (server mode)
• added G61/64 GCode settings for path precision
• Usability:
  • added optional "orthogonal" view (instead of perspective)
  • added a "recent files" item to the file menu
  • added the transparency (alpha) component to all configurable colors
  • added "remaining time" estimation for all operations
  • pre-select output filenames of "Save as" dialogs based on the name of the model file
• Bugs fixed:
  • SVG import: work around a bug in pstoedit (shipped with Ubuntu Lucid)
  • fixed various problems with the support grid

Version 0.3 - 2010-08-16

• added support for importing contour paths from SVG files (requires Inkscape and pstoedit)
• added basic support for importing simple DXF contour files
• added support for engravings (along the lines of a contour model)
• added a feature-complete commandline interface
• integrated "help" links pointing to the wiki
• improved OpenGL lighting (contributed by imyrek)
• improved flexibility of the support grid layout:
  • allow non-square profiles for the support grid
  • added ability to create support grids with different x/y grid distance
  • added x/y offsets to support grid options
• added 3D view movement and rotation with a keyboard in addition to the mouse
• added optional support for the Psyco just-in-time compiler
• information about the toolpath settings are stored as comments in GCode files
• added a log window
• switched default tool size from radius to diameter
• improved progress bar responsiveness
• fixed first movement in GCode: go up to safety height before moving to the side
• fixed model orientation of STL files created by Art of Illusion
• fixed performance issue when using a support grid
• fixed empty toolpath after transforming the model
• fixed various minor bugs of the toolpath generator
• fixed rounded corners (see GCode G61)

Version 0.2.5 - 2010-06-10

• added support bridges for holding the object during cutting
• calculate the estimated machine time for each toolpath
• changing the unit (mm/inch) now opens a dialog for scaling the model, processing dimensions or tool dimensions accordingly
• remove unnecessary moves to safety height
• changed name of configuration setting "overlap" to "overlap_percent" (you may need to change this name in your custom config files)

Version 0.2.4 - 2010-04-12

• added a simple simulation mode for visualizing the material penetration of a toolpath
• join tangential moves (removes the inner points in a colinear set of adjacent path points)
• fixed careless import of Tkinter
• added missing INSTALL.TXT to source package
• fixed typo that breaks PyCAM for Python 2.6

Version 0.2.3 - 2010-04-05

• GUI change: tool and process settings can be combined into tasks
• store configured settings to a file in the user's home directory
• added "material allowance" support for non-ODE calculations
• added export of LinuxCNC tool definitions
• added a warning dialog (GUI) for missing dependencies during startup (especially useful for Windows)
• improved GUI for model scaling
• allow to configure if the tool should move inside/along/around the boundary limits
• fixed "overlap" calculation
• prevent invalid input values (zero tool radius, ...)
• fixed a bug that could rarely cause eternal loops of the PushCutter
• reduced memory consumption of toolpaths for python 2.6 or above
• disabled ODE as the default computation backend (due to this bug: http://sourceforge.net/tracker/?func=detail&aid=2973876&group_id=24884&atid=382799)

Version 0.2.2 - 2010-03-17

• added a graphical installer for Windows (via distutils)
• fixed broken commandline parameter "--template"
• added workaround for ODE collision detection, that is broken under specific circumstances
• fixed hang with PushCutter and ODE on Windows
• fixed "division by zero" error in non-ODE mode
• allow to disable ODE via commandline option
• bugs fixed in cylindrical and toroidal cutter when using dropcutter on horizontal triangles
• fixed "setup.py" for distutils packaging (contributed by Arthur Magill)

Version 0.2.1 - 2010-03-09

• fixed code that depended on GTK 2.16 (instead of 2.12)
• view settings "light", "shadow" and "polygon fill" are now configurable
• documented version problems with Debian "Lenny" and Ubuntu (before "Karmic")

Version 0.2 - 2010-03-04

• added an alternative GTK interface with additional features:
  • configurable 3D view settings: model / toolpath / axis / drill progress / frame rate / colors
  • manipulation of the model: rotation, flip, swap, scale, move
  • saving the model to an ascii STL file
  • load/save processing settings from/to a file
  • handling of multiple processing templates (e.g. "Rough", "Semi-finish" and "Finish")
  • configure "material allowance" for a minimum distance between drill and model
  • configure the "safety height" for the machine
  • allow to manage and export (gcode) multiple toolpaths at once
  • based on GtkGlExt (for OpenGL)
  • visualize invalid processing setting combinations
  • configure "overlap" instead of "lines" and "samples"
  • configure "maximum step down" instead of "layers"
  • show a progress bar during calculations
  • basic lighting for the OpenGL view
• improved performance by (optionally) using the "Open Dynamics Engine" (ODE) for collision detection

Version 0.1.11b - 2010-02-25

• fix minor release mistake (missing "STLExporter")

Version 0.1.11 - 2010-02-19

• fix detection of binary STL
• added Simulation mode
• ignore invalid triangles (caused by high-resolotion models)
• automatic boundary fits to the model
• add ubuntu specific note
• code cleanups

Version 0.1.10 - 2009-07-13

• support binary STL
• close contours

Version 0.1.9 - 2009-06-18

• linux compatibility
• integrated kdtree
• fix speedup shortcuts

Version 0.1.8 - 2009-04-14

• some feature requests
• fixes by Dan Falck
• fix bug in torus-point intersection
• specify model in cfg
• fixed opengl representation
• update tests

Version 0.1.7b - 2009-02-10

• fix glutInit bug

Version 0.1.7 - 2009-01-27

• another try at fixing PushCutter
• remove MGED exporter

Version 0.1.6b - 2009-01-15

• fix save
• follow api updates
• fix gcode parameter strings

Version 0.1.6 - 2009-01-14

• fix verticals intersection
• add ContourCutter
• guard against float division
• add x/y direction
• add ContourCutter
• minor layout improvements
• make speed configurable
• enable command line driven operation
• debug output
• SVG output

Version 0.1.5 - 2008-11-26

• add direction switch
• add reading pre-model default values from config file
• fix verticals in DropCutter

Version 0.1.4 - 2008-11-16

• make tool come outside the stock while cutting
• make safety height higher than stock

Version 0.1.3 - 2008-09-17

• fix redraw

Version 0.1.2 - 2008-09-11

• added unit option mm/in
• fix coordinate system for Art of Illusion exported STL files
• added view control buttons
• added bounding box calculation

Version 0.1.1 - 2008-09-01

• second release

Version 0.1 - 2008-08-29

• initial release