alezost/emacs-mwim: Switch between the beginning/end of line or code

Alex Kost 14043e0996 Add 'mwim' command		%!s(int64=8) %!d(string=hai) anos
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mwim-tests.el	14043e0996 Add 'mwim' command	%!s(int64=8) %!d(string=hai) anos