add time based filtering

This accepts timestamps in the following formats:

* Human-readable, like "15d", taken relative to the current time.
* rfc3339-like "2018-03-14 13:13:00"

More formats might be added in the future.

1 files changed, 1 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 0fdb1be..576e7d5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,3 +14,4 @@ colored = "1"
 chrono = "0.4"
 rayon = "1"
 num-traits = "0.2"
+humantime = "1.1"