Initialization fails for Julia with DEV in version

[jlapeyre]

> julia --version
julia version 1.8.0-DEV

> python -m juliacall
Traceback (most recent call last):
  ...
  File "/home/lapeyre/code/github/cjdoris/PythonCall/juliacall/semver.py", line 59, in __init__
    self.parts = tuple(map(int, src))
ValueError: invalid literal for int() with base 10: '0-DEV'

PythonCall.jl master branch 05237b2

This appears to have been introduced in EDIT: cb207df the most recent commit.

The following prevents the error:

        elif isinstance(src, str):
            src = src.strip().split('.')
            if len(src) == 3:
                prerel = src[2].split('-')
                if len(prerel) == 2:
                    src[2] = prerel[0]
                    self.prerel = prerel[1]

But, this just ignores the prerelease DEV. And the version is accepted. Also, the string being processed "1.8.0-DEV" does not include the prerelease number. That is:

julia> VERSION
v"1.8.0-DEV.1455"

[cjdoris]

Thanks! I'm actually factoring out the dependency management stuff right now and this will get fixed as part of that