* Async code is replaced by sync one. It does not take that much of time to convert the js blob to wasm memory for 1 or 2 GB fits files and the code is much more simplier to write
* GLSL/rust refac has been done to only call fitsrs from only one place in the code
* Raw fits data unit is directly given to the GPU. Then the GPU perform the big to little endian conversion on the fly
* impl GZIP fits support #241
* fix#293