v1.9.9

Features:

• Add auto-cpufreq --update feature #535 | closes: #341

Bug fixes and improvements:

• Fixed bug related to recurring sudo prompt for functions that even don't require it #531 | closes: #530
• Adding root_check before set_override method execution #524
• cpufreqctl: don't try writing to non-existent files #533
• Fix Links in the README
• Make Self Referencing Links in the README.md Relative #534
• Fix README typos #536

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