chore: Adjust abbreviation lengths and version checking logic

[LangLangBart]

description

Corrected the version update check, as it previously gave false positives when a user's version was
higher overall, but lower in subsequent parts.

Adjust the abbreviation length for the repo names

Update docs

Miscellaneous

Fix #81 update demo.mp4

demo.mp4

[LangLangBart]

I plan to merge at the beginning of next week. I also want to add some tests, but I haven't decided on a testing framework yet.

---

Requirements:

1. Simple installation command, no plugins required
2. Ability to mock all three possibilities: alias, function export, and PATH override
3. Sufficient failure reporting

Bats

• Does not meet my third requirement, as the expected value is not shown by default

shUnit2

• Does not meet my second requirement, lacks function exports for mocking

bash_unit (not tested yet)

bashunit (not tested yet)

ShellSpec

• Test writing syntax is unintuitive

shpec

• Last commit was 5 years ago

bach

• requires bash version >=4.3, macOS still comes with bash 3.2 by default