README fixes, new RoundedLocal time format, more local source options

* i wanted to make sure `undefined` was handled properly. seems like it is.
* tested with Bun, works. Deno runs faster though, by about 1.8µs/message construction!
* Removed skeletons from closet (bug fixes)
* Sources can now optionally specify their own time format and/or log timing
* Requests and Responses now can be converted and displayed (no bodies)

BENCH.md

@@ -0,0 +1,49 @@
+## Benchmarks
+[<-- Back to README](./README.md)
+
+Deno 2.4.1 can't find my CPU for some reason.
+
+Ran with an AMD Ryzen 7 5800X @ 3.6GHz
+
+`benchmark/deno.ts`:
+```
+| benchmark   | time/iter (avg) |        iter/s |      (min … max)      |      p75 |      p99 |     p995 |
+| ----------- | --------------- | ------------- | --------------------- | -------- | -------- | -------- |
+
+group timing-sync
+| 1 Log       |          1.6 µs |       643,000 | (  1.5 µs …   1.9 µs) |   1.5 µs |   1.9 µs |   1.9 µs |
+| 100 Logs    |        153.4 µs |         6,520 | (147.1 µs … 279.5 µs) | 150.2 µs | 229.9 µs | 234.5 µs |
+| 1k Logs     |          1.5 ms |         650.2 | (  1.5 ms …   1.7 ms) |   1.6 ms |   1.7 ms |   1.7 ms |
+| 10k Logs    |         15.4 ms |          65.0 | ( 15.2 ms …  16.1 ms) |  15.4 ms |  16.1 ms |  16.1 ms |
+| 100k Logs   |        153.5 ms |           6.5 | (152.9 ms … 154.8 ms) | 153.7 ms | 154.8 ms | 154.8 ms |
+
+summary
+  1 Log
+    98.62x faster than 100 Logs
+   989.00x faster than 1k Logs
+     9887x faster than 10k Logs
+    98680x faster than 100k Logs
+
+group timing-deferred
+| 1 Log       |          1.6 µs |       644,200 | (  1.5 µs …   1.6 µs) |   1.6 µs |   1.6 µs |   1.6 µs |
+| 100 Logs    |        153.2 µs |         6,525 | (147.5 µs … 269.1 µs) | 150.6 µs | 228.1 µs | 230.8 µs |
+| 1k Logs     |          1.5 ms |         653.9 | (  1.5 ms …   1.7 ms) |   1.6 ms |   1.6 ms |   1.6 ms |
+| 10k Logs    |         15.3 ms |          65.3 | ( 15.2 ms …  15.7 ms) |  15.3 ms |  15.7 ms |  15.7 ms |
+| 100k Logs   |        153.7 ms |           6.5 | (152.9 ms … 155.9 ms) | 154.0 ms | 155.9 ms | 155.9 ms |
+
+summary
+  1 Log
+    98.72x faster than 100 Logs
+   985.10x faster than 1k Logs
+     9865x faster than 10k Logs
+    99040x faster than 100k Logs
+```
+
+### TL;DR / What does this mean?
+
+You can, *in theory* and *on average*, construct 650,000 messages per second.
+
+I don't know how to benchmark a logger without logging messages to stdout,<br>
+so I created a dedicated `bench` function on each source that just *constructs* them.
+
+Deferred is not really much faster, but can be helpful in some scenarios. I think. Maybe.