* Some explanations for running tests under wasmtime

packages/paszlib/tests/README.md

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+
+The WebAssembly version of the tczipper test reads/writes temporary files in the current
+directory and in the TMP directory (this is the directory returned by gettempdir). 
+
+You must pre-open these directories so the wasm environment can write in it. 
+
+Using wasmtime this can be done as follows:
+
+wasmtime --dir=.  --dir=/tmp tczipper.wasm
+
+Similarly the testsingle test needs the same 2 directories:
+
+wasmtime --dir=. --dir=/tmp testsingle.wasm