Eliminate recursion

[jlogan03]

0.11.0 2026-01-15

Changed

• !Remove recursive implementations
  • All dimensionalities now use const-generic bounded implementations
  • For dimensions higher than const-unrolling limit, a run-time loop of the same form is used
  • No notable change in performance for high dimensions
  • No change to API for ::interpn convenience functions
  • All methods are now compatible with static analysis of memory usage via cargo-call-stack
• Refactor internals to reduce duplication
• Improve form of early bounds checks to be interpreted correctly by the compiler
  • 30% speedup in some cases, no effect on most
  • Bounds checks done via iterator do not always result in optimizing out panic branches
• Test cubic methods in higher dimensions