Support splitting files with --- / added tests

Added some tests to verify that you can now split your files with --- to
join multiple queries into a single file. This could be for if you have
two separate regexes to run or even two sources you want to run the same
query against.

Example file:

```example.conf
query=.*example.conf$
source=/path/to/example/
target=/path/to/dest/
---
query=.*different.csv$
soruce=/path/to/different/
target=/path/to/dest/
```

1 files changed, 11 insertions, 0 deletions

diff --git a/test/confs/triple.conf b/test/confs/triple.conf
new file mode 100644
index 0000000..4d5c384
--- /dev/null
+++ b/test/confs/triple.conf
@@ -0,0 +1,11 @@
+query=.*/d.txt
+source=./test/src/
+target=./test/dest/
+---
+query=.*/e.txt
+source=./test/src/
+target=./test/dest/
+---
+query=.*/f.txt
+source=./test/src/
+target=./test/dest/