Replace serdi with more fine-grained tools

Especially with the new functionality, the complexity of the command-line
interface alone was really becoming unmanageable.  The serdi implementation
also had the highest cyclomatic complexity of the entire codebase by a huge
margin.

So, take a page from the Unix philosophy and split serdi into several more
finely-honed tools that can be freely composed.  Though there is still
unfortunately quite a bit of option overlap between them due to the common
details of reading RDF, I think the resulting tools are a lot easier to
understand, both from a user and a developer perspective.

1 files changed, 19 insertions, 0 deletions

diff --git a/test/sort/input.trig b/test/sort/input.trig
new file mode 100644
index 00000000..154a9fb8
--- /dev/null
+++ b/test/sort/input.trig
@@ -0,0 +1,19 @@
+@prefix eg: <http://example.org/> .
+
+eg:graph1 {
+eg:s
+	eg:blank [
+		eg:with eg:aProperty ,
+			eg:orAnother
+		] ;
+	eg:list (
+		1
+		2
+	) ;
+	eg:literal "s1" .
+}
+
+eg:graph2 {
+eg:a
+	eg:b eg:c .
+}