Changelog
---------

v. 2.5.1, 2022-02-28

- fixed bug in getch()
- added copysurface(), lastkey()
- added test/loadimage.c (demo for SDL2_image and copysurface());
  added test/pdj.c (demo for lastkey())
- modified build.sh to to run on GNU/Linux only; renamed as mkpkg.sh
  to avoid confusion
- added support for the tcc compiler (GNU/Linux only); added 
  test/tccrun
- modified CMakeList.txt
- documentation: added doc/howto_AppImage.md, doc/howto_AppImage.pdf,
  doc/README.md; minor updates
- added doc/icon.png
- update Windows Makefiles to SDL2-2.0.20

v. 2.5.0, 2021-09-20
- fixed kbhit() bug on MSYS2 (at last!)
- fixed minor bug in setallpalette()
- fixed test/fern.c for TC compatibility
- modified functions putpixel(), setbkcolor(), setcolor(), 
  setfillpattern(), setfillstyle(), setpalette(), and setalpha() to
  handle colours given as out of range numbers
- modified setallpalette() and setfillstyle() to implement error checks
  as in TC
- simplified floodfill() function (implemented recursive version)
- improved setpalette() to change currently drawn pixels
- modified delay() to take events into account
- modified resizepalette()
- added getrgbpalette(), setallrgbpalette(), and RGBPALETTE()
- added test program test/rgbpalette.c
- implemented getwindowwidth() and getwindowheight() as macros for
  WinBGIm compatibility
- removed test program test/setpalette.c
- updated Windows Makefiles to SDL2-2.0.16
- documentation updates

v. 2.4.4, 2021-05-04
- fixed bug that affected floodfill() with fill patterns in rare cases
- extended setcolor(col) to implement an undocumented TC feature; if
  'col' > MAXCOLORS, then col %= MAXCOLORS
- documentation updates

v. 2.4.3, 2021-02-24
- modified getscreensize() behaviour (suggested by Fanourios Attard)
- added setwintitle()
- added man page (graphics.3)
- documentation fixes and updates
- changed test/simple.c to avoid getch() bug on MSYS2
- updated Windows Makefiles to SDL2-2.0.14 and latest releases of
  Code::Blocks and DevCpp

v. 2.4.2, 2020-11-11
- implemented native vector fonts, compatible with Borland .CHR fonts
- implemented long-forgotten graphics error checks!
- added resetwinoptions(), getscreensize(), edelay(), getmaxheight(),
  getmaxwidth(), resizepalette()
- added undocumented clearviewport() in setbkcolor()
- changed setwinoptions() to reset options for newly created windows
- fixed .CHR font loading on Windows
- fixed graphresult() to provide actual error codes
- fixed subtle bug in outtextxy() (CP must not be moved)
- fixed compatibility in getpalette(), getpalettesize(),
  setallpalette(), setusercharsize()
- fixed setrgbpalette() to avoid out of range errors
- improved fill patterns
- documentation updates

v. 2.4.1, 2020-08-08
- implemented a 16-colour palette that uses the same RGB values as
  Turbo C. This palette is used if the environment variable
  SDL_BGI_PALETTE is set to "BGI"
- extended setpalette() to modify the default 16 colours too
  (requested by Austin Hurst)
- added initpalette() to restore the original 16 colours in the
  palette
- added more Hershey fonts: Cursive, Futural, Rowmant, and Timesr
- fine tuning of Hershey font metrics; now they equal the metrics of
  corresponding .CHR fonts
- Preliminary .CHR font loading support, by Marco Diego Aurélio
  Mesquita: added installuserfont(). Does not work on Windows.
- fixed off-by-1 in CENTER_TEXT
- fixed undocumented feature in bar3d() (4 pixel vertical offset on
  the top)
- simplified installation on macOS using the Homebrew package manager
- documentation and Makefile updates

v. 2.4.0, 2020-02-20
- Hershey font support as a replacement for the original Borland
  .chr fonts (suggested by Marco Diego Aurélio Mesquita)
- if the SDL_BGI_RES environment variable is set to "VGA", 
  initgraph (DETECT, ...) forces VGA (640x480) resolution
- fixed missing refresh() in getch()
- fixed long-standing bug in settextjustify() when text is vertical
- fixed long-standing compatibility problem with kbhit()
- fixed bug in getbuffer() and putbuffer()
- added getlinebuffer() and putlinebuffer()
- changed 8x8 bitmap font using the one from the DosBox emulator
- added '-std=gnu99' in Makefiles for better compatibility
- removed delay in closegraph() when not in 'auto mode'
- added 'test/fonts.c' and 'test/linebuffers.c', removed 'test/moveit.c'
- code cleanup

v. 2.3.1, 2020-01-20
- added getbuffer(), putbuffer(), COLOR32(), and colorRGB (macro) for
  faster pixel manipulation; added showinfobox(), getleftclick(), 
  getmiddleclick(), getrightclick() 
- documentation updates and improvements
- added test/bgidemo.c
- code cleanup

v. 2.3.0, 2019-08-01
- added 'auto mode': initgraph() performs automatic screen refresh
  when the environment variable SDL_BGI_RATE is set to 'auto' or to
  the desired refresh rate (e.g. 60). This can be used as an
  alternative to 'slow mode', and it provides a huge performance
  boost. The new function sdlbgiauto() is also available. BEWARE:
  automatic refresh may not work on some NVIDIA graphics cards.
  Patch provided by Marco Diego Aurélio Mesquita.
- added compatibility with C++ programs
- added showerrorbox()
- improved compatibility in bar3d()
- fixed bug in setfillpattern()
- updated Makefiles for Windows (updated to SDL2-2.0.10)
- documentation updates

v. 2.2.4, 2018-11-15
- added some graphics modes for better compatibility
  with old programs
- fixed bug in setvisualpage()
- minor fix in getch()
- fix in putimage() bitwise operations
- modified readimagefile() again
  (reported by Carlos Gustavo Ramirez Rodriguez)
- added test/kaleido.c
- added savestate() and restorestate() in turtle.c
- documentation updates and improvements

v. 2.2.3, 2018-09-18
- fixed bug in setalpha()
- rewritten readimagefile() to change unwanted behaviour
  (reported by Fanourios Attard)

v. 2.2.2, 2018-09-10
- documentation updates (clarification on colours)
- constants TMP_FG_COL, TMP_BG_COL, and TMP_FILL_COL added

v. 2.2.1, 2018-08-08
- renamed getch() to bgi_getch() and added the macro getch()
  to avoid Mingw bug
- delay() rewritten to take care of key presses
- fixed bug in BLUE_VALUE(), GREEN_VALUE(), RED_VALUE(), setalpha()
- added ALPHA_VALUE()
- added test/psychedelia.c
- code revision and cleanup

v. 2.2.0, 2018-07-18
- added setwinoptions() for window title, position, and SDL flags
- added support for multiple windows: extended initwindow(),
  added getcurrentwindow(), setcurrentwindow(), closewindow()
- SDL_QUIT support in getch(), getevent(), kbhit(), xkbhit()
- documentation updates

v. 2.1.2, 2018-06-05
- documentation updates (Code::Blocks, Dev-C++)

v. 2.1.1, 2018-05-25
- fixed SDL_bgi.h (missing stdio.h, stdlib.h, and string.h)
- merged SDL_bgi.h and SDL_bgi_font.h

v. 2.1.0, 2018-01-02
- fixed stupid bug in getch()
- added mouse wheel up/down events
- code cleanup
- improved documentation
- improved turtle graphics
- added CMake support for GNU/Linux
  (thanks to Jani Rautiainen)
- added Mingw-w64 + MSYS2 support
- added macOS support

v. 2.0.8, 2016-11-15
- fixed bug in palette-manipulating functions 
  (reported by Jacek Mainczyk)
- Makefile changes

v. 2.0.7, 2016-11-10
- fixed bug in event()
  (reported by Peje Nilsson)
- added eventtype()

v. 2.0.6, 2016-02-29
- fixed bug in writeimagefile()
  (reported by Manea Alexandru Damian)
- implemented clipping in readimagefile()
- turtle graphics improvements
- documentation improvements

v. 2.0.5, 2015-12-13
- fillpoly() correctly implemented
- demo programs sdlbgidemo.c and fern.c improved
- symbol _SDL_BGI_H defined in SDL_bgi.h
- minor fix in getch()

v. 2.0.4, 2015-11-30
- rewritten to use SDL_Surfaces only instead of
  bitmaps in main RAM
- ellipse() and fillellipse() improved
- xkbhit() added

v. 2.0.3, 2015-09-28
- in "slow mode", screen refresh is also 
  triggered by kbhit() and getch()
- minimal dos.h and conio.h provided
- kbhit() rewritten to avoid buffered keys

v. 2.0.2, 2015-06-03
- fill patterns (not for floodfill() yet)
- setfillpattern()/getfillpattern() implemented
- writeimagefile() added
- documentation updates
- test programs updates

v. 2.0.1, 2015-05-11
- line patterns implemented
- floodfill improvements
- writeimagefile() added
- documentation updates

v. 2.0.0, 2015-04-30
- major release: rewritten to use SDL2 only
- added readimagefile() and logical plotting (XOR, etc.)

v. 1.0.1, 2014-12-09
- Fixed minor bugs in putpixel()
  (reported by Angelo Graziosi)
- changed getimage()/putimage() to include width, heigth info
  in saved bitmap
- changed getimage()/putimage() to include viewport info
- fixed MAXCOLORS value
  (reported by Angelo Graziosi)
- fixed kbhit() behaviour (reported by Angelo Graziosi) - but breaks
  mouseclick() as a result. To be fixed later.

v. 1.0.0, 2014-11-07
- Initial release.