Log Message:
cbindgen: Update to 0.14.2

Changelog:
0.14.2
 * Fixed minimal dependency versions. (#507)
 * Add an option to write pragma once. (#511)
 * Fix submodule scanning for implicit Rust 2018 modules. (#512)
 * Fix dependency parsing / scanning to handle target-specific versions. (#513)
 * Use heck for case conversion. (#514)
 * Add support for verbatim content after includes. (#416)
 * Allow to add attributes to most generated functions. (#515)

0.14.1
 * Handle mangling pointers. (#508)
 * Unconditionally generate a return statement in partialeq implementations. (#509)

0.14.0
 * Minor tweak at how [export.exclude] is handled to allow excluding
   generic instantiations in C mode. (#501)
 * Documented cpp_compat option. (#496)
 * Fixed a panic when parsing associated constants for a built-in type. (#494)

0.13.2
   * Constants now have suitable documentation. (#471)
   * Fixed some C warnings by emitting void when there are no arguments. (#470)
   * Avoids reading cargo.toml when not needed, which can cause panics in \ 
workspace situations.
   * Only write `default` cases if the switch is not exhaustive. (#475)
   * Some warnings have been refined. (#477)
   * Code generation for static arrays has been fixed. (#479)
   * Opt-in support for constexpr in constants. (#481)
   * Fix C code generation and some warnings when extremely large constants are \ 
used. (#490)
   * Proper escaping of enum variants and fields. (#483)
   * Added support for RefCell (as an opaque type) and Cell. (#489)

5a4d74b
ir: escape export_name while writing source of EnumVariant