v0.9.8

• add gita rename <repo name> <new name> sub-command to change repo name
• support git worktree folder
• add show, show-branch, shortlog, whatchanged

Note this release breaks the repo path format saved in ~/.config/gita/repo_path. One can either delete it and add the repo paths again, or change the file content. For example

/a/b/c:/a/e/f:/e/f/g

should change to

/a/b/c,c
/a/e/f,f
/e/f/g,g