Added even more things to make the addon more feature complete

  - Added effect `[re]load all [y[a]ml] from [(1¦non[(-| )]relative)] director(y|ies) %strings% [using [the] filename as [the] id]` (loads all .yml from a directory thx pikachu for the idea)
  - Files are now saved with additional lines between each node
    - Updated 'Save yaml' effect to...
      - `save [y[a]ml] %string% [(1¦without extra lines between nodes)]`
  - Comments and header no longer add additional lines by default
    - Updated 'Yaml comment/header' expressions to...
      - `[the] comment[s] (of|from) [y[a]ml] node[s] %strings% (of|in|from) %string% [(1¦with [an] extra line)]`
      - `[the] (comment[s] (at|on) [the] top of |header (of|from)) %string% [(1¦with [an] extra line)]`
  - Updated 'Yaml' expression return type now stuff like this works...
    - broadcast yaml value "location" from "plugins/skript-yaml/teleport.yml"
    - teleport player to yaml value "location" from "plugins/skript-yaml/teleport.yml"