Track minimum datafile version

Add infrastructure and helper functions to track minimum datafile version.
To make this information useful we need to keep the XML and git data
format versions in track moving forward.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/qt-ui/mainwindow.cpp b/qt-ui/mainwindow.cpp
index 0095aaf97..d9a2769c2 100644
--- a/qt-ui/mainwindow.cpp
+++ b/qt-ui/mainwindow.cpp
@@ -458,6 +458,8 @@ void MainWindow::closeCurrentFile()
 	free((void *)existing_filename);
 	existing_filename = NULL;
 
+	reset_min_datafile_version();
+
 	cleanUpEmpty();
 	mark_divelist_changed(false);