Planner: Add backgas breaks

If the corresponding checkbox is checked the planner does interrupt
pure O2 deco after 12min for 6min on cylinder 0.

To make this work for air I removed the gasmix_is_null logic.

I guess that makes the planner feature complete for the next release.

[Dirk Hohndel: trivial merge into latest master]

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/pref.h b/pref.h
index 7345e4eac..19830a920 100644
--- a/pref.h
+++ b/pref.h
@@ -61,6 +61,7 @@ struct preferences {
 	short proxy_auth;
 	char *proxy_user;
 	char *proxy_pass;
+	bool doo2breaks;
 };
 enum unit_system_values {
 	METRIC,