reorganize code

implement range selection for listbox

fix mbox refresh

change default window size

generalized lisbox routines, fixed msg_read, can now switch mailboxes

getting ready to add complexity

taro-ls: fix mouse rendering; taro-ctl: add some boilerplate

taro-ls: fix underscores in signature comments; MblazeProxy: remove MBOX_ROOT prefix from mdirs

ChildWindow: wait for termination and read stdin on separate fibers, use exit; taro-ls: scrollbar, fix performance

first commit - resizable uxn window lists inbox and crystal module can talk to it