[enhance] buf,debug: added a static variable to debug buf
[fix] libbase/mongo: using GC finalise to do safe pool handling
CHANGELOG Mongodb buffer sharing is now always safe
[enhance] libbase: Made Buf module optionally resizable according to …
[feature] libbase: Added copy to Buf.
[feature] libbase: Added add_substring to Buf.
[feature] mongo: New files for mongo API.