incr version to 2.6.8

fix printf format problem on machines with long tv_usec; version 2.6.7 (

#228)

Co-authored-by: David Waitzman <djw@domaintools.com>

Version 2.6.6, to restore sync between the tag's version and the vers…

…ion in globals.h

Update README - CentOS 8 steps also works for AlmaLinux & Rocky Linux (…

…#221)

CentOS 8 steps also works for AlmaLinux & Rocky Linux. And reformat to one single dnf line.

Issue 214: batch option parsing bug in tokstr library changes. versio…

…n 2.6.4 (#215)

Document again the HTTPS_PROXY environment variable

detect duplicate or overrun in rrtype sets (PR #194) (#195)

* Version 2.6.0.  
* detect duplicate or overrun in rrtype sets (PR #194)
* Document MAX_FETCHES variable

Primary-authored-by: paul vixie <vixie@fsi.io>
Slight-coauthored-by: David Waitzman <djw@fsi.io>

Increment version to 2.5.5

Correct commit "b5d75b: freebsd portability" to have Makefile still b…

…uild by

default on non-FreeBSD systems.
To build on FreeNSD, swap the LIBS= lines as shown in Makefile.

remove probe. version 2.5.3 (#173)

* Removed probe feature.

* Add note: not all passive DNS systems or versions of those system implement the same query features.

* Remove unreached error msg

* version 2.5.3

* Renamed existing "dnsdb" system to be "dnsdb1".  Made "dnsdb" be an alias for "dnsdb2".  Restructured parts of the man page

* Update Copyright year to 2021

* Remove stray character