Synchronize deck only if necessary

Look at the modification time of the deck, and synchronize if it has
been modified after the last deck read.

1 files changed, 1 insertions, 2 deletions

diff --git a/README.md b/README.md
index 363a67d..3a9f7d0 100644
--- a/README.md
+++ b/README.md
@@ -23,8 +23,7 @@ Cards are created from a plain text `./deck` file:
 
 # TODO
 
-- Look at last modification of the deck, and omit db sync if last sync was after (+ show a message when synchronizing the deck)
-- Fix crashes on zoom / changing size
+- Fix crashes on zoom / changing vertical size
 
 ## Maybe