### What?
This change removes 3 flags (`--all`, `--both`, and `--format`) from
`str trim`. This is a net reduction of ~450 LoC and `str trim` no longer
depends on `fancy_regex`.
### Why?
I found these flags to be quite confusing when reviewing `str trim`
earlier today:
1. `--all` removes characters even if they're in the centre of the the
string.
- This is arguably not "trimming"! In all programming languages I'm
familiar with, trimming only affects the start and end of a string.
- If someone needs to do this, `str replace` is more natural IMO
2. `--both` trims from the left and right
- Confusing and unnecessary given that this is also the default
behaviour
3. `--format` replaces multiple spaces with a single space, even in the
centre of the string
- Again, I don't think this falls under the scope of "trimming". IMO
`str replace` is a more natural fit
I believe that `str trim` is simpler and easier to understand after this
change.
### Before
```
〉help str trim
Trim whitespace or specific character
Search terms: whitespace, strip, lstrip, rstrip
Usage:
> str trim {flags} ...(rest)
Flags:
-h, --help - Display the help message for this command
-c, --char <String> - character to trim (default: whitespace)
-l, --left - trims characters only from the beginning of the string
-r, --right - trims characters only from the end of the string
-a, --all - trims all characters from both sides of the string *and* in the middle
-b, --both - trims all characters from left and right side of the string
-f, --format - trims spaces replacing multiple characters with singles in the middle
```
### After
```
〉help str trim
Trim whitespace or specific character
Search terms: whitespace, strip, lstrip, rstrip
Usage:
> str trim {flags} ...(rest)
Flags:
-h, --help - Display the help message for this command
-c, --char <String> - character to trim (default: whitespace)
-l, --left - trims characters only from the beginning of the string
-r, --right - trims characters only from the end of the string
```
2aa5c2c41f