Update docs, mark funcs deprecated and fix typo

[ringsaturn]

No description provided.

[codecov]

Codecov Report

Patch coverage: 63.63% and no project coverage change.

Comparison is base (76f5330) 67.79% compared to head (553b1c4) 67.79%.

❗ Current head 553b1c4 differs from pull request most recent head bcdddec. Consider uploading reports for the commit bcdddec to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #103   +/-   ##
=======================================
  Coverage   67.79%   67.79%           
=======================================
  Files           3        3           
  Lines         295      295           
=======================================
  Hits          200      200           
  Misses         83       83           
  Partials       12       12           

Impacted Files	Coverage Δ
tzf.go	69.81% <63.63%> (ø)

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