DS9 Version 8.3 Release Notes

### SAOImageDS9 Version 8.3 Release Notes

1. `02.25.2021 AGIF: fixed issue so that every frame is delayed by the delay parameter, not just the first.`
2. `03.04.2021 3D: fixed issue where the 3D progress timer was not shutdown properly when the frame was deleted.`
3. `03.06.2021 SIA: 2mass removed from options. Site is not returning proper data.`
4. `03.08.2021 TCL/TK: upgrade to version 8.6.11`
5. `03.15.2021 REGIONS: fixed a problem when invalid color is specified.`
6. `03.15.2021 REGIONS: fixed a problem when colorname has a space.`
7. `03.18.2021 WCS: fixed typo in menu.`
8. `03.21.2021 MACOS: fixed saveimage/movie for retina display.`
9. `03.23.2021 FITSY: fixed issue with NULL pName_.`
10. `03.23.2021 PRISM: plot default line width is 0.`
11. `03.23.2021 XML: fix delete()/free() mismatch.`
12. `03.25.2021 XML: fix memory corruption issue with WIN64.`
13. `03.26.2021 WCS: simplify WCS parameter dialog.`
14. `03.27.2021 PRISM: fix minor display issue. Last row was not visible.`
15. `04.04.2021 CATALOG: tweak import/export options.`
16. `04.04.2021 FOOTPRINT: tweak export options.`
17. `04.04.2021 SIA: tweak export options.`
18. `04.04.2021 PRISM: tweak import/export options.`
19. `04.05.2021 PLOT: disable old scatter plot options.`
20. `05.13.2021 MACOS: external 'cc' compiler must be installed for filter bin tables.`
21. `05.19.2021 RELEASE version 8.3b1`
22. `05.23.2021 WCS: Make SipReplace=0 as the default behavior.`
23. `05.26.2021 TKCON: upgrade to version 2.7.10.`
24. `05.26.2021 TKSIGNAL: upgrade to version 1.4.4.1.`
25. `05.28.2021 AWTHEMES: upgrade to version 10.3.0.`
26. `06.03.2021 TKSVG: install version 0.7`
27. `06.03.2021 THEME: all AWTHEMES are now available for use.`
28. `06.04.2021 TTKTHEMES: upgrade to version 3.2.2.`
29. `06.04.2021 TCLLIB: upgrade to version 1.20.`
30. `06.05.2021 TKIMG: upgrade to version 1.4.13.`
31. `06.10.2021 COLORMAP: add MatPlotLib colormaps.`
32. `06.18.2021 NOTES: add notebook support.`
33. `07.12.2021 WCS: improved precision for binned WCS keywords.`
34. `08.10.2021 FITSY: NAXIS[1]=0 is legal.`
35. `09.27.2021 GUI: implemented new multi colorbar mode.`
36. `09.30.2021 FITSY: update rice compression code from cfitsio.`
37. `09.30.2021 FITSY: update hcompress compression code from cfitsio.`
38. `09.30.2021 FITSY: update plio compression code from cfitsio.`
39. `09.30.2021 RICE: fits_rdecomp will spit out error msgs for some block sizes, just ignore.`
40. `09.30.2021 FUNTOOLS: upgrade to verion 1.4.8`
41. `10.02.2021 ANALYSIS: add analysis buttonbar.`
42. `10.11.2021 RELEASE version 8.3rc`
43. `10.18.2021 MACOS: fix AboutBox`
44. `10.25.2021 ANALYSIS: fix filedialog open|save command.`
45. `10.26.2021 GUI: change window class for all windows to 'Ds9.tcl'`
46. `11.08.2021 CATALOG: fix minor parser error.`
47. `12.15.2021 RELEASE version 8.3`