Add version switch using author name and information from git revision.
Help switch now writes to stdout and return 0.
Add makefile rules to auto-generate and install man page.
Add make clean.
Minor reformating of help text.
Fix slurp issuing a huge second read for known small files.
Fix pubkey loader fstating fd even if open failed.
Add config file support.
Add string whitespace trimming utility functions.
Change single instance check to include key/config arguments.
Use install instead of cp for make install, add make uninstall.
Add option to fixup comments on identities supplied by the agent.
If daemonising, trim any -e/--execute arguments off the command line.
It is untidy to have them hanging around the ps listing.