I used the file static/logo.png from your website to design my version of the application icon that IMHO is better suited for application icon and definitely looks better on smaller sizes. Here it is:

(you can download this image as is, GitHub doesn't compress uploaded images, checked that by comparing file hashes)
I designed that in GIMP, if you want I can share the .xcf file.
I used the file
static/logo.pngfrom your website to design my version of the application icon that IMHO is better suited for application icon and definitely looks better on smaller sizes. Here it is:(you can download this image as is, GitHub doesn't compress uploaded images, checked that by comparing file hashes)
I designed that in GIMP, if you want I can share the
.xcffile.