comic quality of life improvements

Added things that ought to make Luca Goers reading on patreon more pleasant.

- At the start of each chapter there's now links to the previous and next chapters.  

- Added more tags as well so every chapter is searchable (new tags take a little while for patreon to 'recognize', it will work eventually).

Around August I'll drop zip files of the whole comic.  A digital comic release, if you will.  I always just use windows photo viewer myself to read my own comic since the file names already order the pages.  No, no, you won't need to buy it, you just get it.  Isn't it great how you guys get it all in one tier for less than the price of a gallon of gas a month.