When you are in a buffer sometimes you want to do a search and replace
but preserve the case. For example if we have the following code.
```rust
let some_struct = SomeStruct::new();
```
if we want to rename this to `another_struct` we can call dev case and
it will search and replace preserving the case. We can run the following
command.
```
:S some_struct another_struct
```
This will replace the above code so we will be left with
```rust
let another_struct = AnotherStruct::new();
```
This plugin handles calling the cli tool and displaying an in place
preview of the change so you can see exactly what you will be changing.
It uses the `S` custom command so it feels similar to the built in `s`
Substitute command.
Ade Attwood
a5cd17fe58