syntax/wretch.vim: Switch to 'minlines' syntax syncing.
syntax/wretch.vim: Disable reckless syntax-file loading of syntax/rst.vim.
vimrc.tests: Add normal backspace settings.
tests/3_proper_movement: Add regression test (with README) for 108d1d9.
design.wt: Updates of the last year.
Makefile: Add target 'test-update'.