a stable release (out of beta)

• changed the display of the approximate size of FITS cut-outs to the IEC binary format (i.e. MiB, GiB, TiB, etc.)
• switched the display of the FITS file size to IEC binary
• improved automatic hiding of the newly-opened empty tab upon performing FITS cut-outs (browser dependent)
• re-wrote the server-side real-time WebSocket communication between the server and the web browser (replaced the mongoose C networking library with a custom C code loosely based on libmicrohttpd_ws)
• added reference counting to the FORTRAN FITS dataset derived type
• re-compiled the WebAssembly with the latest emscripten compiler
• out of beta into stable operation and maintenance, receiving bug fixes, tweaks and improvements