add changelog

Reviewed-on: #1

CHANGELOG.md

@@ -0,0 +1,6 @@
+# Changelog
+
+# 0.3.1
+
+- fixed some argument handling (negative offset, broken -M)
+- update library versions (except clap, which made too many breaking changes and the interface actually got worse)

src/main.rs

@@ -68,6 +68,7 @@ fn main() {
                      .short("m")
                      .long("move")
                      .value_name("OFFSET")
+                     .allow_hyphen_values(true)
                      .help("Move all subtitles in time (e.g 12:00.15 or -0:44)"),
             )
             .arg(clap::Arg::with_name("automove")
@@ -75,6 +76,7 @@ fn main() {
                      .long("automove")
                      .value_name("ENTRY=VIDEOTIME")
                      .multiple(true)
+                     .number_of_values(1)
                      .help("Move subtitles starting at a given time or index to align with \
                      a matching audio track time. This argument can be given multiple times. \
                      Some subtitles may be dropped if they fall outside the timeline after \