Fix #37 change version_tuple to string

[shenxianpeng]

Fixed #37

[2bndy5]

I'd prefer the tuple be integers, but I guess if python can compare a tuple of strings it should be ok as long as we're looking for an exact matching version number.

[codecov-commenter]

Codecov Report

Merging #38 (b8edfaf) into main (ce41d4f) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #38   +/-   ##
=======================================
  Coverage   87.71%   87.71%           
=======================================
  Files           4        4           
  Lines         171      171           
=======================================
  Hits          150      150           
  Misses         21       21           

Impacted Files	Coverage Δ
clang_tools/install.py	82.69% <100.00%> (ø)

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[shenxianpeng]

ver_num.groups(0)[0].decode(encoding="utf-8").split(".") this is a tuple of strings so I also change the version number to string. Compare strings in python should be ok

[2bndy5]

Typically, we compare tuples of integers in python when determining if a version number is greater or less.

>>> (1, 0, 0) > (0, 1, 0)  # v1.0.0 > v0.1.0
True

Like I said, comparing a tuple of strings should be adequate for matching an exact version number.