PRINCIPAL CHANGES IN VERSION 20110923

De-checked cells
Multiple letters in cells
Square-to-square constraints (`free lights')
Cyclically permuted entries
Toroidal, Mobius etc. grid topologies
Unconstrained "lights" (i.e., ignored by filler)
Bold/italic text in cells
-fPIC added to build line for plugins
`Treatment enable' for cells: flag for answer treatment
Export answers includes possible answers as well as lights
Filler less profligate with memory
Statistics: lights too long for filler, free lights
Switched to gtk_file_chooser
One-word dictionaries
Ctrl-X: erase all cells
Improved HTML bar appearance

CHANGES IN VERSION 20110826

Minor change to examples
Changelog included in release

PRINCIPAL CHANGES IN VERSION 20110818

Minor bug fixes
Hex and circular grids
Cell merging
Minor changes to editing keys: PgUp/Dn, arrow keys, space and tab
Use Home/End within a light
Grid size set via `Grid properties' in Edit menu
Multiple dictionaries, reloadable during construction
Dictionary filtering using PCRE
Answer treatments, custom plug-ins
Select sets of cells or sets of lights and apply properties to them; shift-right click
Zoom view
Improved rendering
PNG export, HTML+PNG export
New save format (will read old files)
Better reporting of errors
Title and author recorded
Digits allowed in grid
Manual now available
Scores removed from display (but still work as before underneath)
