[Docs] Add docs on breaking change

README.md

@@ -5,6 +5,9 @@
 
 This repository contains a collection of LaTeX files, helping you get started with LaTeX quickly.
 
+Breaking change in the current version: the time complexity commands now require the math environment. You may use the following vim-regex to fix issues in your code:
+`:%s/\\text{\\tc\([olt]\){\(.*\)}}/\\tc\1{\2}/g` (execute first) and `:%s/ \\tc\([olt]\){\(.*)}\([, .\n]\)/ \$\\tc\1{\2}\$\3/g`
+
 
 # Getting started
 See the docs [here](https://git.janishutz.com/janishutz/latex/src/branch/main/docs/docs.pdf) to get started.