[PATCH] Add Petrel & OSTC3 support to the list of updates

[subsurface at henrik.synth.no]

From: Henrik Brautaset Aronsen <subsurface at henrik.synth.no>

This has been requested several places, so let's just put it in
plain view for everyone

Signed-off-by: Henrik Brautaset Aronsen <subsurface at henrik.synth.no>
---
 ReleaseNotes.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ReleaseNotes.txt b/ReleaseNotes.txt
index 274430f..7a6abbd 100644
--- a/ReleaseNotes.txt
+++ b/ReleaseNotes.txt
@@ -51,6 +51,7 @@ New in version 3.1 (compared to Subsurface 3.0.2):
 - improved printout formatting and printer dialog
 - support for color printing
 - dive planning: add option for last stop at 6m/20ft
+- native support for the Shearwater Petrel and Heinrichs Weikamp OSTC3
 - various bug fixes
 
 
-- 
1.8.2.2