(def gzip-profile
  {wrap-output-stream (fn [^OutputStream os] (-> os ->gzip-os ->os-writer))
   content-encoding gzip-content-encoding
   write! (->write-with-temp-buffer!)})

(def gzip-profile
  {wrap-output-stream (fn[^OutputStream os]
                        (-> os
                            (->gzip-os 1024)
                            ->os-writer))
   content-encoding gzip-content-encoding
   write! (->write-with-temp-buffer! 4096)})

Namespace containing the shared code for each adapter.

It contains helpers for working with [[OutputStreams]] and assembling SSE
sending function using several strategies and managing exceptions in the
adapters.

The main concept here is what we call "write profiles". A write profile is
a map of 3 keys:
- [[wrap-output-stream]]
- [[write!]]
- [[content-encoding]]

With these 3 keys we can control buffering aspects of our SSE connection and
compression functionality.

Here is an example profile which uses gzip and temporary buffers to
concatenate SSE event text:

```clojure
(def gzip-profile
  {wrap-output-stream (fn [^OutputStream os] (-> os ->gzip-os ->os-writer))
   content-encoding gzip-content-encoding
   write! (->write-with-temp-buffer!)})
```

The `wrap-output-stream` function will use a [[GZIPOutputStream]] and an
[[OutputStreamWriter]] constructed with the [[->gzip-os]] and [[->os-writer]]
helpers.

To go with this we use a `write!` function constructed with
[[->write-with-temp-buffer!]].

If we wanted specific buffer sizes we could do:

```clojure
(def gzip-profile
  {wrap-output-stream (fn[^OutputStream os]
                        (-> os
                            (->gzip-os 1024)
                            ->os-writer))
   content-encoding gzip-content-encoding
   write! (->write-with-temp-buffer! 4096)})
```

The output stream wrapping helpers are:
- [[->gzip-os]]
- [[->os-writer]]
- [[->buffered-writer]]

The write function helper to go with them are:
- [[->write-with-temp-buffer!]]
- [[write-to-buffered-writer!]]

See the rest of the docstrings for more details.

Utilities providing a test SSEGenerator and a mock `->sse-response`
function.