Add tsv output formatoutput-formats

This patch adds a new output format, tsv.  It uses the tsv crate to
generate the data and the serde_json crate to transform structs into
key-value pairs.

TODO: man page, changelog

1 files changed, 1 insertions, 0 deletions

diff --git a/src/args.rs b/src/args.rs
index 3936738..f34de81 100644
--- a/src/args.rs
+++ b/src/args.rs
@@ -63,6 +63,7 @@ Enum! {
   OutputFormat, [
     Json => "json",
     Text => "text",
+    Tsv => "tsv",
   ]
 }