Increase robustness to exotic clang versions #163
Merged
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As seen in #162, not all clang installations neatly follow the "clang version MAJOR.MINOR" template. This causes crofiler to fail when using, e.g., Debian's provided version of clang. This commit increases the robustness of the version checking by relying on a regular expression which can match a broader range of possible versions.
Resolves #162.