Add sdist and upload scripts

Which I meant to include in the last commit.

diff --git a/bin/sdist b/bin/sdist
new file mode 100755 (executable)
index 0000000..f3219a2
--- /dev/null
+++ b/bin/sdist
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+stack sdist --pvp-bounds both

diff --git a/bin/upload b/bin/upload
new file mode 100755 (executable)
index 0000000..0717ca9
--- /dev/null
+++ b/bin/upload
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+GPG_TTY=$(tty) stack upload --pvp-bounds both .