graph/load: add build tags to fix make cross

Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com>
Add v1.3.2 changelog & bump version to 1.3.2-dev

Signed-off-by: Tibor Vass <teabee89@gmail.com>
Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com>