Convert `var=${dirname $filename)` to `var="${filename%/*}` in cases where there is no ambiguity.
Make sure that the path in `$BASH_IT` is absolute because this path gets embedded in the template `.bash_profile` file if selected by the user.
Found if this `${cache}` file doesn't exist, the single line conditional command would return false causing a `exit 1`.
This little change makes the conditional verbose and not cause a false return failing the function.
* Extracting common utilities into utilities.bash
* Adding new tests for utilities
* Relocating the cache file to be under $BASH_IT
* Removing cache cleanup deferral code for now
* Wiping the cache in local_setup in tests.
John D Pell
Noah Gorny
cornfeedhobo
Eivind Uggedal
Kyle Welsby
Konstantin Gredeskoul