Add github usernames to History and update mailmap

.mailmap

@@ -20,6 +20,7 @@ GITHUB: jacott <geoffjacobsen@gmail.com>
 GITHUB: Maxhodges <Max@whiterabbitpress.com>
 GITHUB: meawoppl <meawoppl@gmail.com>
 GITHUB: mitar <mitar.git@tnode.com>
+GITHUB: mitar <mitar.github@tnode.com>
 GITHUB: mizzao <mizzao@gmail.com>
 GITHUB: mquandalle <maxime.quandalle@gmail.com>
 GITHUB: nathan-muir <ndmuir@gmail.com>
@@ -28,6 +29,14 @@ GITHUB: ryw <ry@rywalker.com>
 GITHUB: rzymek <rzymek@gmail.com>
 GITHUB: sdarnell <stephen@darnell.plus.com>
 GITHUB: timhaines <tmhaines@gmail.com>
+GITHUB: jfhamlin <jfhamlin@gmail.com>
+GITHUB: marcandre <github@marc-andre.ca>
+GITHUB: michaelbishop <michael@michaelsplace.net>
+GITHUB: OyoKooN <nathan@sxnlabs.com>
+GITHUB: paulswartz <paulswartz@gmail.com>
+GITHUB: rdickert <robert.dickert@gmail.com>
+GITHUB: icellan <icellan@icellan.com>
+GITHUB: yeputons <egor.suvorov@gmail.com>
 
 METEOR: avital <avital@thewe.net>
 METEOR: debergalis <matt@meteor.com>
@@ -40,3 +49,5 @@ METEOR: karayu <lele.yu@gmail.com>
 METEOR: n1mmy <nim@meteor.com>
 METEOR: sixolet <naomi@meteor.com>
 METEOR: Slava <slava@meteor.com>
+METEOR: Sashko <sashko@mit.edu>
+METEOR: ekatek <ekate@meteor.com>

History.md

@@ -182,6 +182,10 @@
 * Don't cache direct references to the fields arguments to the subscription
   `added` and `changed` methods.  #1750
 
+Patches contributed by GitHub users, DenisGorbachev, OyoKooN, awwx,
+dandv, icellan, jfhamlin, marcandre, michaelbishop, mitar, mizzao,
+mquandalle, paulswartz, rdickert, rzymek, timhaines, and yeputons.
+
 
 ## v0.7.0.1