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Changes include:
  - Correct braces around conditional and loop constructs, enforcing the
    one true brace style.
  - Fix cases where spaces were used for indentation.
  - Fix incorrect indentation.
  - Delete whitespace at the ends of lines.
  - Delete stray whitespace in the middle of lines.
  - Change double quotes to single quotes where escape sequences and
    variable substitutions are not used.
  - Fix some letter casing in symbol names (e.g. "Exception" instead of
    "exception").
These changes make the codebase more consistent and compliant with the
coding standard.