release 1.4.5

• GUI: automatically calculate and store the new cell size (see Settings dialog) when window is resized
• GUI: added color scheme (#9, high-intensity colors, from Simon Tatham's "Flood")

release 1.4.4

• GUI: auto-detect the "dark mode" setting of the operating system
  • automatically use either "FlatLaf Dark" or "FlatLaf Light" depending on the detected system setting
  • applies to the very first launch of this program and to the "Restore Defaults" button in the Settings dialog
  • user can override it using the "Look & Feel" choice in the Settings dialog

release 1.4.3

• GUI: enhanced highlighting of mouse-over cells
  • each small dot of newly uncovered areas will get an additional circle around it
    if that color becomes completable, which hints at an upcoming optimal move
• GUI: add Settings option to display the control panel on the left or right side of the game board

release 1.4.2

• GUI: support Windows dark mode (Linux works as well)
  • go to Settings and select Look & Feel: FlatLaf Dark or FlatLaf Darcula

release 1.4.1

• GUI: enhanced highlighting of mouse-over cells
  • empty circles (outline) for areas that don't uncover new areas
  • filled circles for those areas that uncover new areas and thus advance the game progress
  • small filled dots for newly uncovered areas
• GUI: added highlight transparency (adjustable in Settings dialog)
• GUI: enhanced Settings dialog
  • use Textfield and Slider instead of Spinner components
  • use Radiobutton groups instead of Combobox components
• updated FlatLaf - Flat Look and Feel to current version 3.6
  • https://github.com/JFormDesigner/FlatLaf/releases

release 1.4.0

• GUI: added special highlight "X" for deferrable colors
  • they have no neighboring areas outside of the already explored region
  • therefore, selecting such a deferrable color would be a sub-optimal move
  • these colors should be selected in a later move
• GUI: draw wider lines (more than just one pixel) for larger cell sizes
• improved code of AStar solver and strategies
• updated FlatLaf - Flat Look and Feel to current version 3.5.4
  • https://github.com/JFormDesigner/FlatLaf/releases

release 1.3.3

• updated FlatLaf - Flat Look and Feel to current version 3.2
  • https://github.com/JFormDesigner/FlatLaf/releases
• improved AStarPuchertStrategy - runs even faster
• added 99problems, another set of test cases
  • https://github.com/manteuffel723/flood-it-boards
  • all specified optimal solutions in the files are confirmed by ColorFill
• performed another complete benchmark run of codegolf26232
  • latest run took 54 minutes 16 seconds
    (21 minutes faster than previous version 1.3.2)

release 1.3.2

• updated FlatLaf - Flat Look and Feel to version 2.0.1
  • https://github.com/JFormDesigner/FlatLaf/releases
• improved AStarPuchertStrategy and AStarFlolleStrategy
  • they use less memory and run slightly faster
• performed another complete benchmark run of codegolf26232
  • same optimal result of 1,985,078 steps
  • first run in early 2018 (using version 1.1.1) took about 120 hours
  • latest run took 75 minutes - this huge speedup was made possible by:
  • the numerous code optimizations (about 5 times as fast as version 1.1.1)
  • and the much more powerful computer (8-cores CPU with 64 GB of RAM)

release 1.3.1

• added GUI Look&Feel configuration to settings dialog
• added FlatLaf - Flat Look and Feel (with 2 light and 2 dark themes)
  • https://www.formdev.com/flatlaf
  • https://github.com/JFormDesigner/FlatLaf
  • Copyright 2019 FormDev Software GmbH
  • FlatLaf is open source licensed under the Apache License 2.0
• added color scheme: Grayscale
• added highlight color: Blue
• small speedup of AStarPuchertStrategy and AStarFlolleStrategy

release 1.3.0

• Java 8 or higher is required
• added checkboxes to switch on/off each solver strategy (persistent setting)
  • DfsExhaustiveStrategy is disabled by default (it's so slow)
• optimized AStarPuchertStrategy (about twice as fast as version 1.2.2)
  • optimal solutions are found in less time and using less memory
• added AStarFlolleStrategy
  • idea is taken from the program "terminal-flood" by Flolle (Florian Fischer)
  • https://github.com/Flolle/terminal-flood
  • based on terminal-flood InadmissibleSlowStrategy, with minor modifications
  • doesn't always find optimal solutions, but usually finds very good solutions
  • runs faster and uses less memory than AStarPuchertStrategy
• added "-benchmark" feature
  • command line parameters: -benchmark [solver strategy]
  • in folder "benchmark" there are a shell script, some test data and results
  • several of the test datasets have been copied from Flolle's terminal-flood
• improved import/export of Board data from/to text data
  • supports arbitrary characters for colors (not limited to numbers anymore)
  • maximum number of distinct characters (colors) per board is 16