Changes

BREAKING: Feat: Conditionally expose JanetFile "piped" flag (PIPED was removed in Janet 1.22.0)
BREAKING: Refactor: Changed definition of IsJanetAbstract trait
BREAKING: Refactor: Changed the return type of JanetAbstract::get{_mut, _unchecked, _unchecked_mut}
BREAKING: Feat: Move everything possible to C-unwind
BREAKING: Up Minimum Rust version to 1.71.0
Feat: Add additional implementation of From implementation for
JanetBuffer, JanetArray and JanetTable
Feat: Expose JanetBuffer methods that use CStr on no_std environment
Feat: Expose JanetFile "update" flag
Feat: Expose more of the String-like types API on no_std environment
Feat: Add method can_resume for JanetFiber
Refactor: Simplify the tuple! and structs! macros
Refactor: Simplify a few PartialEq implementations
Refactor: Simplify JanetStruct implementation of Clone
Refactor: Adapt lifetimes to changes on bstr crate
Refactor: Modernize format strings
Fix: Fix compilation when unicode feature os off
Fix: Fix check_mut_ref on janet_fn attribute macro
Fix: Fix linking on non x86_64 targets
Docs: Improve documentation flags
Docs: Simplify links
CI: Many CI improvements

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