Added tag ns-3.21 for changeset fa4be182ef17
update RELEASE_NOTES for new release version
update CHANGES.html for new release version
revert accidental commit of debugging code in changeset 55f1b7dc037e
Bug 1991 - PcapFileWrapper::CaptureSize attribute (snaplen) has no effect.
Bug 1983 - FlowMonitor returns containers copies instead of references
Example ht-wifi-network contains old random variable syntax
Avoid forward declaration if not needed - silence Eclipse warning
Bug 652 - no public API for IPv4 neighbor table - Print functions
Verbose option to doxygen.warnings.report.sh: includes doxygen build chatter.
[Bug 1551] NS_LOG_COMPONENT_DEFINE inside or outside of ns3 namespace?
[Bug 1551] Redux: NS_LOG_COMPONENT_DEFINE inside or outside of ns3 namespace?
Python bindings: fix generation of callback wrappers with the newest pybindgen
Python: rescan bindings
I meant to bump pybindgen version up, not down.  Use latest PBG version.
Use pybindgen revno 885 to pull container ref bug fix
Pull new pybindgen version to fix the build, again.
bug 1551 postfix:  enable logging for functions outside namespace ns3
Replace erroneous "using namespace ns3" with namespace ns3.
Reflow tutorial page