Fix that tqdm_class cannot be passed to tmap and tzip

[grst]

There's currently the issue that tqdm_class cannot be passed to tmap and tzip. This PR fixes the issue and adds tests for it.

Here's a repex of the problem:

from tqdm.contrib import tmap
from tqdm import tqdm       
list(tmap(print, range(10), tqdm_class=tqdm))

---------------------------------------------------------------------------
TqdmKeyError                              Traceback (most recent call last)
<ipython-input-4-62e01f8ad3b6> in <module>
----> 1 list(tmap(print, range(10), tqdm_class=tqdm))

~/anaconda3/lib/python3.7/site-packages/tqdm/contrib/__init__.py in _tmap(function, *sequences, **tqdm_kwargs)
     64     tqdm_class  : [default: tqdm.auto.tqdm].
     65     """
---> 66     for i in _tzip(*sequences, **tqdm_kwargs):
     67         yield function(*i)
     68 

~/anaconda3/lib/python3.7/site-packages/tqdm/contrib/__init__.py in _tzip(iter1, *iter2plus, **tqdm_kwargs)
     52     kwargs = deepcopy(tqdm_kwargs)
     53     tqdm_class = kwargs.pop("tqdm_class", tqdm_auto)
---> 54     for i in zip(tqdm_class(iter1, **tqdm_kwargs), *iter2plus):
     55         yield i
     56 

~/anaconda3/lib/python3.7/site-packages/tqdm/std.py in __init__(self, iterable, desc, total, leave, file, ncols, mininterval, maxinterval, miniters, ascii, disable, unit, unit_scale, dynamic_ncols, smoothing, bar_format, initial, position, postfix, unit_divisor, write_bytes, lock_args, nrows, gui, **kwargs)
    961                     fp_write=getattr(file, 'write', sys.stderr.write))
    962                 if "nested" in kwargs else
--> 963                 TqdmKeyError("Unknown argument(s): " + str(kwargs)))
    964 
    965         # Preprocess the arguments

TqdmKeyError: "Unknown argument(s): {'tqdm_class': <class 'tqdm.std.tqdm'>}"

[codecov]

Codecov Report

Merging #1148 (c633fc5) into master (bcce20f) will decrease coverage by 0.18%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1148      +/-   ##
==========================================
- Coverage   84.73%   84.55%   -0.19%     
==========================================
  Files          25       25              
  Lines        1651     1651              
  Branches      273      273              
==========================================
- Hits         1399     1396       -3     
- Misses        213      216       +3     
  Partials       39       39              

[casperdcl]

woops; nice catch.