Soulver 3.9.1

Restored compatibility with macOS 11 Big Sur by removing reliance on an incompatible 3rd party library
Reduced the size of the Soulver application by almost 40%

Bug fixes

Fixed an issue where a comment consisting of multiple words in parentheses was interfering with previously typed math expressions (thanks Ted)
Addressed an issue where expressions and answers could be misaligned on launch