Tags give the ability to mark specific points in history as being important
f 0.7.10: fix cold-path slowdown on non-project directories (100x for /tmp)
f 0.7.9: replace libgit2 with native git (50-80x faster cold scan)
f 0.7.8: cache git status for large repos (120x speedup)
f 0.7.6: doc cleanup, remove historical lazy flag design docs
f 0.7.5: remove migration-from-0.6.x table from README
f 0.7.4: README and INSTALL.md updated for 0.7.x routing
f 0.7.3: -b flag for banner mode, alias and flag audit
f 0.7.2: paths are dropped, only numbers/aliases/flags accepted
f 0.7.0: replace lazy flags with built-in alias system (BREAKING)
f 0.6.37: lazy flag value-binding with `:` separator