use smaller UDP NAT cache
refine library interface
fix a typo
update configure
fix #128
refine #128
enable building shared library for #128
bump version
Update README.md
update changelog
refine fast open
bump version
Merge pull request #140 from madeye/v1.5.1

Fix a bug introduced by fast open.
fix #142 and fix #143
add missing files
my first commit
some notes!
updated to 1.5.1