Release Nageru 1.7.5.

[nageru] / bmusb

diff --git a/bmusb b/bmusb
index b447be096623b949a2117c71af03bb96d329d988..e9aa80b8e6a09cf2c8b3458a1c395b6f1b6a58cc 160000 (submodule)
--- a/bmusb
+++ b/bmusb
@@ -1 +1 @@
-Subproject commit b447be096623b949a2117c71af03bb96d329d988
+Subproject commit e9aa80b8e6a09cf2c8b3458a1c395b6f1b6a58cc