Stats: Use seconds resolution for title duration plot

CHANGELOG.rst

@@ -9,6 +9,10 @@ and this project adheres to `Semantic Versioning <https://semver.org/spec/v2.0.0
 -------------
 `Unreleased`_
 -------------
+Changed
+-------
+- Titles plot uses seconds resolution with -duration option
+
 Fixed
 -----
 - Fix database creation code for immutable SQLAlchemy 1.4 URLs

telegram_stats_bot/stats.py

@@ -604,7 +604,7 @@ class StatsRunner(object):
             df = df.reset_index(drop=True)
             df['idx'] = df.index
 
-            ax.barh(df.idx, df['diff'].dt.days, tick_label=df.new_chat_title)
+            ax.barh(df.idx, df['diff'].dt.days + df['diff'].dt.seconds/86400, tick_label=df.new_chat_title)
 
             ax.margins(0.2)
             ax.set_ylabel("")