Autotools don't need 'ChangeLog' file anymore

All changes are tracked in 'NEWS' file
Description of upcomming version is now tracked in Github
Fix typos and style in NEWS and changelog
Delete .travis.yml before making tarball
We do not use Launchpad anymore for making new releases
Update README.md

Fix link
Do not ship RELEASEWORKFLOW anymore. Description is now in Github Wiki
We do not alter code from a git tag when making a new release
Renaming file
Don't fix tabs and spaces
File RELEASEWORKFLOW does't exist anymore
Fix Makefile.am
Let Gentoo uses Github instead of Launchpad
Added checks to ensure provided directory for dump files is valid and correctly formatted, defaults to CWD if not provided
fixed possible crash in case dump thread is canceled and cleanup function is called twice
fixed possible crash in case dump thread is canceled and remove_flow() is called before dump thread actually terminated
fixed that uninit_flow() invalidates all existing pointers to flows following the one in question