Since presym is now mandatory, mruby.h includes presym.h so that
MRB_SYM() macros are available everywhere without explicit include.
Remove redundant #include <mruby/presym.h> from all source files.
Co-authored-by: Claude <noreply@anthropic.com>
Added complete call-seq documentation for proc binding functionality across
both source and test files:
## Core Implementation (src/proc_binding.c):
### Main Method:
- binding: returns Binding object capturing proc's execution context,
includes comprehensive examples showing local variable access, parameter
binding, and scope retention with practical usage patterns
### Helper Functions:
- mrb_mruby_proc_binding_gem_init: initializes gem by adding binding method
to Proc class, explains method signature and return type behavior
Co-authored-by: Atlassian Rovo Dev
Yukihiro "Matz" Matsumoto