Add .mailmap & fix crate metadata

Author: coolreader18

.mailmap

@@ -0,0 +1,8 @@
+#
+# This list is used by git-shortlog to aggregate contributions.  It is
+# necessary when either the author's full name is not always written
+# the same way, and/or the same author contributes from different
+# email addresses.
+#
+
+Noa <coolreader18@gmail.com> <33094578+coolreader18@users.noreply.github.com>

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "mt19937"
 version = "2.0.1"
-authors = ["Noah <33094578+coolreader18@users.noreply.github.com>", "RustPython Team"]
+authors = ["Noa <coolreader18@gmail.com>", "RustPython Team"]
 edition = "2018"
 license-file = "LICENSE"
 description = "A translation of the MT19937 Mersenne Twister rng algorithm to Rust"