Version 1.0.0

 * [feature] Allow saving/loading bookmarks from/to file #31
 * [feature] Support text annotations #29
 * [feature] Delete bookmarks in all buffers #24
 * [feature] Persist bookmarks automatically #5
 * [enhancement] Sort files in quickfix list alphabetically #26
 * [enhancement] Don't jump to first bookmark when opening quickfix window #18
 * [bugfix] Adding bookmark in new/unsaved buffer fails #30
 * [bugfix] Bookmarks on empty lines show up wrong in quickfix window #25