[prompt] pure: Update submodule to version 1.8.0

changelog: https://github.com/sindresorhus/pure/compare/v1.6.0...v1.8.0 Closes #298
2018-09-30 17:42:17 +02:00 · 2018-09-30 17:42:17 +02:00 · e5639c8fa7
--- a/modules/prompt/external-themes/pure
+++ b/modules/prompt/external-themes/pure
@ -1 +1 @@
-Subproject commit a95d55cc7d3a73fc562ac11e23c26113ed6d58cf
+Subproject commit 7aade5fca2acae3f10e260d0c076af6356da9dc6