Adds support for parenthesis touching other functions

[Lukasdotcom]

No description provided.

[github-actions]

☂️ Code Coverage

% Stmts	% Branch	% Funcs	% Lines
89.12 🟢	79.73 🟡	87.5 🟢	88.27 🟢

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File	% Stmts	% Branch	% Funcs	% Lines
src
index.ts	100 🟢	75 🟡	100 🟢	100 🟢
simpleMath.ts	88.62 🟢	81.54 🟢	80 🟡	88.13 🟢
src/operations
factorial.ts	77.78 🟡	50 🔴	100 🟢	75 🟡
log.ts	100 🟢	100 🟢	100 🟢	100 🟢