* improved alpha macros
* demo: use new alpha macros
* add ncplane_set_*_alpha()
* explicitly set fg for uniblock
* outro: background is a space #139
* distinct alpha channels for fg/bg #139
* rename 'background' cell to 'default' #142
* doc palette fades
* uniblock-demo: reset background to black
* warning about quantization
* some luigi love
* update cell documentation
* add unit test for move of stdplane
* MoveToLowerRight unit test
* ncplane_move_yx(): error to move stdscr
* better box permutations test
* luigi in megaman2 world
* stats: don't print 'em if we haven't got 'em
Add the necessary input buffer, non-blocking reads, escape trie,
and unit tests to support extended keys, including arrow keys.
Update notcurses-input to print Unicode Control Glyphs instead of
a blank space for control chars.
Slider demo: paint chunks in a pattern, then shuffle them up #72
Right-to-left unit tests #66
Fix up damage to uniblock demo using cup explicit cursor move #66
* cell/ncplane: simplify box API (#97)
* widecolor: use new box api (#97)
* uniblock: use new box API #97
* intro: use new box api #97
* panelreel: use new box api
* boxdemo: use new box API #97
* sliding: use new box API #97
* maxcolor: use new box api #97
* factor out notcurses_channel_prep() #97
* maxcolor: use new channel API #97
* sliding: use new channel API #97
* intro: use new channel API #97
* new output functions with no need for a cell
* add ncplane_putegc() and ncplane_putsimple(). the former takes an EGC, the latter a simple char less than 0x80. (#97)
* cell_prime: directly load all parts of a cell with immediates
* widecolor: use new output API #97
* boxdemo: properly initialize cells
* slider: total time cap of 5 * delaydemo
* maxcolor: use new output API #97