when should ranges be static

[monkyyy]

I have template hell code; eventually 5 nested range calls have 
dual context-y issues and maybe compiler bugs; adding static 
makes those errors go away, adding static to everything makes new 
bugs.

Wack-a-mole when the compiler gets confused about context is not 
a long term solution and for all I know, wont even be stable.

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> foo is a nested function and cannot be accessed by bar

When foo and bar are a top level range functions; this error is 
nonsense, but im treating it like a dual context error because it 
seems to act that way.

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https://github.com/crazymonkyyy/ref-algorithms/blob/master/refalgorithm.d