Releases/v.1.6.0 beta1

[Duefectu]

v1.6.0 - beta 1

#New ‘Options -> Next -> Palette builder’.

• Generates palettes for ZX Spectrum Next from .bmp, .jpg and .png images.
• Allows to add classic Spectrum colours and greyscales
• Adapts images to the loaded palette or adds new colours to the current palette
• Allows to modify the colours of the palette
• Loads palettes in .pal (Next palette standard format) and .gpl (Gimp palette) formats
• Converts the loaded image to the current palette
• Saves the converted image in .png and .nxi (Next standard format) formats

#6 [Bug]: Project Explorer bar doesn't show new files created