use CompiledFormatter
add wcg utility for debugging something output from wcg logs.
fix Cookie Parser when cookie value including '='
fix Sign/Unsign method.

if the hmac signature includes '.', it could not be unsinged.
we use base64 encoding for the signature and join the raw value with the signagure,
instead of applying base64 in joined string
use raw UUID for session.
missing default session key!
quote string.
added a task for building tools