wizard now reacts to terminal size changes and can function at much smaller terminal dimensions; fixes #649

internal/configure.zsh

@@ -1,5 +1,5 @@
-typeset -gr __p9k_wizard_columns=55
-typeset -gr __p9k_wizard_lines=21
+typeset -gr __p9k_wizard_columns=51
+typeset -gr __p9k_wizard_lines=12
 typeset -gr __p9k_zd=${ZDOTDIR:-$HOME}
 typeset -gr __p9k_zd_u=${${${(q)__p9k_zd}/#(#b)${(q)HOME}(|\/*)/'~'$match[1]}//\%/%%}
 typeset -gr __p9k_zshrc=${${:-$__p9k_zd/.zshrc}:A}