Update (#651)

* fix `bazel` build (ignore switch case fall-through)
* add `NPOSTFIX` / `NDIRECT` encoder parameters
* fix source file lists (add `params.h`)
* fix bug in `durchschlag`
* print clarifying messages wheb CLI argument parsing fails

diff --git a/setup.py b/setup.py
index d8478b3..7535fb2 100644
--- a/setup.py
+++ b/setup.py
@@ -249,6 +249,7 @@
             'c/enc/memory.h',
             'c/enc/metablock.h',
             'c/enc/metablock_inc.h',
+            'c/enc/params.h',
             'c/enc/prefix.h',
             'c/enc/quality.h',
             'c/enc/ringbuffer.h',