Release 0.9.6 "Peace" - Bug fixes

This release is mostly bug fixes

Bug fixes

• Evaluate index in get and put like the HP50G
• Avoid premature simplification during arithmetic operations
• Do not wrap variables after Copy, e.g. in 'A+A▶A+A'
• Return errors for unknown primitives / derivatives in algebraics
• Correctly use GraphicResultDisplay for result stack level
• Ensure pi and e display the same size at 60 digits precision
• Fix bogus exponent truncation in polynomials
• Fix issue in + and - on vectors with angles, e.g. [ 3 2 1.7_° ]
• Fix possible garbage collection memory corruption in FromVector

Improvements

• units: Make BaseUnits, →Deg, →Rad, →Grad and →πr array-wise
• Add VectorMenu on first page of MatrixMenu
• Do not single-step or debug during plot/integration
• Add routine to render u64 and i64