OpenSystemsDevelopment / qpdf

… for clarity and consistency across dictionary operations.

…tionary, modernize constructors, and clean up null handling logic.

…up method implementations, and simplify member handling.

…ed_ptr and forward declaration.

…ent and simplified temporary null management. Clean up unused test coverage markers.

…ent and simplified temporary null management. Clean up unused test coverage markers.

Simplify integer value retrieval by introducing a templated `value` method in the `Integer` class. Replace redundant exception handling logic across multiple functions with this unified approach. Streamline type conversions and improve readability.

…arameters with their existing empty values.

…e parameters with their existing values.

…ng handling with `qpdf::String`, and clean up `Members` class implementation.

…ant logic, and streamline type conversions.

…::types` helpers, simplify pipeline usage, and clean up includes.

… clean up unused file.

…and simplify pipeline logic.

…nt checks, and streamline string handling.

…` file and eliminate unneccessary creation of `Members` object.

…sting return values for uninitialized objects, and cleaning up error handling logic.

…ndles on invalid input..

…eplacing redundant logic with centralized functions, and streamlining bad token handling for improved readability and maintainability.

…raints, replacing hardcoded values for nesting, container size, and error limits.

… for improved code readability and maintainability.

… simplify logic. Update related test outputs and release notes.

…` and replace with `String::utf16`.

Added `qpdf::String` class to encapsulate string operations. Updated `QPDFObjectHandle` string methods to utilize `qpdf::String`, streamlined empty string handling, and removed redundant test coverage entries.

…oved shared pointer handling, remove deprecated object methods, and update all references.

…DFObjectHandle` storage, remove unused trace calls, and streamline invalid handle checks.

…sages, and clean up `QPDF.hh`.

… and `findEndstream` to `Objects`, remove `QPDF::PatternFinder` class, and update related logic for improved encapsulation.