* TODO progressive zoom
* TODO Fixme
** linknav + presentation (link might not fit the visible area)
* TODO outline for cbz
  file names? exif?
* TODO build.bash
** Parallel builds
   gmk=1 bash build bash build - generates Makefile for "gmake -jN"
     it maybe possible to utilize GNU parallel(1) inside build.bash to
     achieve the same without GNU make
* TODO [maybe] inside rect/quad (_Generic)
* TODO threaded rendering
* TODO wikit - https://github.com/moosotc/llpp/issues/128
* TODO (maybe?) make C replies use byte commands too
* TODO reset fractional coordinates when needed
* TODO kymap mapcode
  add a way to bind keycodes (not keysyms) to actions
* TODO multiple targets in build.bash
  exit inside 'doc' target is not, in general, correct
* TODO scroll by paragraph/block
  - State "TODO"       from              [2021-12-06 Mon 23:35]
* TODO judicious use of memchanged
* TODO fix multicolumn visible eviction K330w-manual.pdf
  - State "TODO"       from              [2021-12-07 Tue 00:49]
  -7 columns
  <doc path='/home/malc/K330w-manual.pdf'
    key='45fb0ee0baecb257f41fa92e8128660f' pan='-480'
    pixmap-cache-size='1M'
    trim-margins='true'
    columns='-7'
    title='20210910 K330w&#232;&#175;&#180;&#230;&#152;&#142;&#230;&#138;&#152;&#233;&#161;&#181;  1.cdr'
    last-visit='1638743044'/>
<doc path='/home/malc/x/org/kbd/orn/noi-IMG_20181003_142031.jpg'
    key='39d1226776dc827727ef3e24c42e66be'
    title='noi-IMG_20181003_142031.jpg'
    last-visit='1633097087'/>

    zoom pan quit, load - position is not the same
<doc path='/home/malc/x/inc/harmons.jpeg'
    key='f38a98484584d216680176d330aa92b5'
    page='0' rely='0.699800' pan='-8795'
    zoom='1161.16'
    title='harmons.jpeg'
    last-visit='1638744240'/>
* TODO llpp -last and llpp select first entry in history behave differently
  586cb865549a22765a91ee0983e02a56429b1577
* TODO llpp recode and comment "tile" handling