PyneComp v6.0.67 — several converter fixes for correctness, mostly around edge cases in…

Fixes

• array.sort and array.sort_indices calls using the sort_field parameter were rejected as invalid — they now work correctly.
• Converting a script with a nested ?: ternary containing na could produce broken, unparseable output — now converts correctly.
• Converting a v4 script where two block-scoped functions shared the same header comment could wrongly merge them into one, corrupting the result — fixed.
• Converting a function whose body was written on the same line as its => could produce a value that stayed frozen at its first-bar result instead of updating every bar, or in some cases crash with a NameError — both are now fixed.