With the release of Firefox 49, we are pleased to welcome the 48 developers who contributed their first code change to Firefox in this release, 39 of whom were brand new volunteers! Please join us in thanking each of these diligent and enthusiastic individuals, and take a look at their contributions:

• acautin: 1256912
• gfrolov: 1198518
• gui.bgd: 1264599
• nejmeddine.douma: 1072442
• zheng.xu: 1143022
• Akshay Jain: 1266724
• Amy Chung: 1273835
• Andrew: 1270010
• Anthony Ramine: 1270036, 1270069
• B. Dahse: 1056381, 1170062, 1249936, 1258758
• Ben Hsu: 1261002
• Benoit Chabod: 1245780, 1258353, 1269757
• Bhavin Dave: 893836
• Cesar Valiente: 1272506
• Chris Frey: 1272208
• Dan Huang: 920956, 1126967
• David Walsh: 1244265, 1244268, 1255837
• Ernest Yim: 1145085, 1271003, 1276714
• Hasse: 428421
• Jacob Mortelliti: 1015318, 1273843
• Jaideep Bhoosreddy: 1256780, 1262829
• James Andreou: 1269361, 1274687, 1274690
• Juan Fernandez: 1261210
• Keith Yeung: 1273424
• Maximillian von Briesen: 1127572, 1256812, 1256819, 1256830, 1256843, 1256916
• Mitch L: 219157
• Moaaz Sidat: 1211613
• Mohammad.Billel: 1271577
• Moritz Brunner: 732733
• Munro Mengjue Chiang: 1180725
• Nancy Pang: 1242715
• Natanael Copa: 1274732
• Nathan Hakkakzadeh: 1042068, 1257095, 1275437
• Nikhil Handa: 1014533
• Saad Quadri: 1278137
• Sagar Manchanda: 1272806
• Scott Wu: 446171
• Sergei Chernov: 1241574
• Takahiro Aoyagi: 1259669
• Tom Tung: 1243792, 1271069, 1272830
• Victor Ng: 1272057
• Victor Olasupo: 1205563
• Wayne: 510516
• Wellington Cordeiro: 933170, 1256848
• Weyland: 1275242
• a.l.e: 1256795
• karl: 1194874
• kshitija: 1259666
• vinayak: 1265695

https://blog.mozilla.org/community/2016/09/16/firefox-49-new-contributors/