Update pycparser to 2.18

[pyup-bot]

There's a new version of pycparser available.
You are currently using 2.14. I have updated it to 2.18

These links might come in handy: PyPI | Changelog | Repo

Changelog

2.18

• PR 161 & 184: Update bundled PLY version to 3.10
• PR 158: Add support for the __int128 type.
• PR 169: Handle more tricky TYPEID in declarators.
• PR 178: Add columns to the coord of each node

2.17

• Again functionality identical to 2.15 and 2.16; the difference is that the
  tarball now contains Python files with properly set permissions.

2.16

• Functionally identical to 2.15, but fixes a packaging problem that caused
  failed installation (_build_tables wasn't rerun in the pycparser/ dir).

2.15

• PR 121: Update bundled PLY version to 3.8
• Issue 117: Fix parsing of extra semi-colons inside structure declarations.
• PR 109: Update c_generator to add {} around nested named initializers.
• PR 101: Added support for parsing pragmas into the AST.
• Additional fake headers and typedefs, manifest fixes (97, 106, 111).
• Testing with Python 3.5 instead of 3.3 now (3.4 and 3.5 are the 3.x versions
  tested).
• PR 145: More complete support for offsetof()
• Issue 116: Fix line numbers recorded for empty and compound statements.
• Minor performance improvement to the invalid string literal regex.

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖

[pyup-bot]

Closing this in favor of #244