fix Issue 11780 - RangeError in format for incomplete format specifier
fix Issue 11403 - functions in std.algo can't be used as pred
Make std.container.Array assert.
Fix Take.back property
Take bidirectional unittest
Remove dubious support for Unqual!R
Tweak blocks for consistency
Make internal attributes private
Tweak save implementation
tweak opDollar's DollarToken
new-style aliases
Use preconditions over asserts
rework slicing
Rework qualifiers in Cycle!Array
Use documented unittest in Repeat
Remove superfluous parens
More documented unittest
Redocument Repeat

Because once you've said what it adheres to, there's nothing else to document
Place "Front" before "Back"
Use "in" preconditions over asserts