Lognflow

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* a bug fixed in get_flist

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* multiprocessor_gen is a generator that yields the list of arrived results
* get_flist and thus get_single do not put asterisks on their own.

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* bugs fixed in multiprocessor and loopprocessor
* tests added

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* Added new files for readthedocs
* copy() checks for proper use of arguments
* __call__ returns fpath
* loopprocessor is added

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* get_flist returns whatever search pattern means for .glob
* plt_tight_layout is removed and replaced by bbox
* You can get name from file when file is within the log_dir root

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* multiprocessor handles errors with maximum speed as all processes share error_event
* multichannel_plots assume fitrst fimension is the channels not the last
* printprogress as iterator does not take the first __next__ as a tick
* log_imshow takes meaningful input sizes to make one frame
* log_imshow_by_subplots can put images in different places
* log_imshow_series is the new name of the log_canvas
* if there are multiple images the shape should be n_f x n_r x n_c
* tests are added for all functions
* tests for lognflow.utils is added