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+Changelog
+=========
+
+2.1
+---
+
+New sketch features:
+  * Lathe groups create circle and face entities.
+  * New toolbar button for creating lathe groups.
+  * Chord tolerance is separated into two: display chord tolerance (specified
+    in percents, relative to model bounding box), and export chord tolerance
+    (specified in millimeters as absolute value).
+  * Bezier spline points can be added and removed after the spline is created.
+  * When an unconstrained extrusion is switched between "union" and
+    "difference", its normal is flipped.
+  * Groups can be added in the middle of the stack. Note that this results
+    in files incompatible with version 2.0.
+  * Active group can be removed.
+  * Removing an imported group does not cause all subsequent groups to also
+    be removed.
+  * When a new group with a solid is created, the color is taken from
+    a previous group with a solid, if any.
+  * Entities in a newly active group do not become visible.
+  * When entities are selected, "Zoom to fit" zooms to fit only these
+    entities and not the entire sketch.
+  * Zero-length edges are reported with a "zero-length error", not
+    "points not all coplanar".
+
+New constraint features:
+  * Height of the font used for drawing constraint labels can be changed.
+  * New constraint, length difference, placed with J.
+    (Patch by Peter Ruevski)
+  * Horizontal/vertical constraints are automatically added if a line segment
+    is close enough to being horizontal/vertical. This can be disabled by
+    holding Ctrl.
+  * Reference dimensions and angles can be placed with Shift+D and Shift+N.
+  * Copying and pasting entities duplicates any constraints that only involve
+    entities in the clipboard, as well as selected comments.
+  * Diameter constraints can be shown as radius.
+  * The "pi" identifier can be used in expressions.
+  * Constraint labels can be snapped to grid.
+  * Integer angles are displayed without trailing zeroes.
+  * Angle constraints have proper reference lines and arrowheads.
+  * Extension lines are drawn for point-line distance constraints.
+
+New solver features:
+  * Sketches with redundant and unsolvable constraints are distinguished.
+  * New group setting, "allow redundant constraints". Note that it makes
+    the solver less stable.
+
+New rendering and styling features:
+  * New line style parameter: stippling, based on ISO 128.
+  * Outlines of solids can be drawn in a particular style (by default, thick
+    lines) controlled by the "Show outline of solid model" button.
+  * Occluded edges can be drawn in a particular style (by default, stippled
+    with short dashes) controlled by the "Show hidden lines" button.
+  * Solids can be made transparent.
+
+New export/import features:
+  * The old "import" command (for .slvs files) is renamed to "link".
+  * If a linked .slvs file is not found, first the relative path recorded
+    in the .slvs file is checked and then the absolute path; this is
+    an inversion of the previously used order. If it is still not found,
+    a dialog appears offering to locate it.
+  * DXF and DWG files can be imported, with point-coincident, horizontal and
+    vertical constraints automatically inferred from geometry, and distance
+    and angle constraints created when a dimension placed against geometry
+    exists.
+  * Triangle mesh can be exported for viewing in the browser through WebGL.
+  * Export dialogs remember the last file format used, and preselect it.
+  * Exported DXF files have exact circles, arcs and splines instead of
+    a piecewise linear approximation (unless hidden line removal was needed).
+  * Exported DXF files preserve color and line thickness.
+  * In exported DXF files, constraints are represented as DXF dimensions,
+    instead of piecewise linear geometry.
+  * When exporting 2d views, overlapping lines are removed.
+
+Other new features:
+  * Native Linux (GTK 2 and GTK 3) and Mac OS X ports.
+  * Automatically save and then restore sketches if SolveSpace crashes.
+    (Patch by Marc Britten)
+  * Unicode is supported everywhere (filenames, group names, TTF text,
+    comments), although RTL scripts and scripts making heavy use of ligatures
+    are not rendered correctly.
+  * The vector font is grid-fitted when rendered on screen to make it easier
+    to read regardless of its size.
+
+2.0
+---
+
+Initial public release.