v3.1.0 - Windows compatibility

Updates for Windows compatibility, security fix, templates fixes

• compatibility and identical results across linux/windows/mac using fork/spawn as needed

• better performance in high cpu low memory regimes, as we are passing SharedMemory blobs instead of entire template dicts

• #expr security hole fixed - can no longer execute arbitrary code on maliciously written wiki pages

• #expr comparisons fixed - <= was incorrectly processed as <== for example

• <nowiki> honored in template expansions, removing }} and infobox cruft from many pages

• missing pages restored: colons in titles no longer drop pages, final page not dropped

• a variety of other template improvements, missing operators added, some spacing fixed, future work needed

• optimizations that effectively cancel out the runtime added by the previous list of fixes