header-only library containing prevailing generic datatypes and utility functions for smiley

• Hashtable generic [x]
  • change these to rely on the linked-list implementation so that you don't need to manually re-populate the hashtable whenever it goes over the capacity
• String [x]
• Node (linked tree) [ ]
• hashtable_get, _add, _init, _free [x]
• hashtable_print [x]
• hashfunction should be place-in-able per hashtable as a callback [x]
• Stack, push, pop [ ]
• check_match [x]
• match_until_but_better [x]
• check_opts [x]
• match_until_opts_but_better [x]
• crt_str [x]
• MAYBE string.h function replacements [x]
  • consider actually just limiting the functions that get included in the final executable:

  gcc [-0s] -ffunction-sections [-fdata-sections] -Wl,--gc-sections