Add curly braces to the list of characters to be escaped.

[PhilRunninger]

Description of Changes

Closes #1092

The combination of the globpath() function and the fish shell requires some additional care when it comes to filename characters that need to be escaped. In particular, when a path containing curly braces is used in the globpath() function, it fails in the fish shell, but works fine in bash. If those braces are escaped, then it works in both shells.

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New Version Info

Author's Instructions

• Derive a new MAJOR.MINOR.PATCH version number. Increment the:
  • MAJOR version when you make incompatible API changes
  • MINOR version when you add functionality in a backwards-compatible manner
  • PATCH version when you make backwards-compatible bug fixes
• Update CHANGELOG.md, following the established pattern.

Collaborator's Instructions

• Review CHANGELOG.md, suggesting a different version number if necessary.
• After merge, tag the merge commit, e.g. git tag -a 3.1.4 -m "v3.1.4" && git push origin --tags