add method converge, fix arity related issue

[zydmayday]

No description provided.

[codecov-commenter]

Codecov Report

Merging #119 (47c852c) into main (1269283) will increase coverage by 0.08%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #119      +/-   ##
==========================================
+ Coverage   96.69%   96.77%   +0.08%     
==========================================
  Files         160      164       +4     
  Lines        1605     1645      +40     
==========================================
+ Hits         1552     1592      +40     
  Misses         53       53              

Impacted Files	Coverage Δ
ramda/private/_helper.py	96.15% <ø> (-0.28%)	⬇️
ramda/__init__.py	100.00% <100.00%> (ø)
ramda/converge.py	100.00% <100.00%> (ø)
ramda/curry.py	100.00% <100.00%> (ø)
ramda/curryN.py	100.00% <100.00%> (ø)
ramda/filter.py	100.00% <100.00%> (ø)
ramda/flip.py	100.00% <100.00%> (ø)
ramda/isEmpty.py	100.00% <100.00%> (ø)
ramda/juxt.py	100.00% <100.00%> (ø)
ramda/map.py	100.00% <100.00%> (ø)
... and 8 more

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