Translations:Siril/8/en

New features are being introduced quite regularly. Here is a list of main features:
 * Native image format support
 * unsigned 16-bit FITS files (other FITS are converted to this format on-the-fly)
 * SER files
 * AVI and many other film files
 * Image conversion (to the native FITS format only)
 * Supported input types: 8-bit and 16-bit BMP, TIFF, JPEG, PNG files, NetPBM binary images, RAW DSLR images.
 * Image registration; supported methods:
 * Global star alignment (rotation + translation)
 * Translation using DFT centered on an object, generally used for planetary images
 * Translation using PSF of a star, generally used for deek-sky images
 * Manual translation with two preview renderings of the current image with reference frame in transparency
 * Plate-solving is not implemented yet
 * Image stacking
 * Summing
 * Median
 * Percentile clipping
 * Sigma clipping
 * Median sigma clipping
 * Winsorized sigma clipping
 * Linear fit clipping
 * Pixel maximum
 * Pre-processing of images with multi-channel offset, dark and flat images
 * Enhancement of final images: lightness/contrast cursors on each layer, different scaling modes (linear, log, square root, squared, asinh, histogram equalisation), negative and false colour rendering and clipping.
 * A command line for various processing functions, see the list of available commands.
 * A star finding algorithm with PSF information