Feat/error logs (#16)

* added list of tasks to achieve

* update deps

* update elixir version in CI/CD pipeline

* update todo with branch push checks

* underscores separation of large numbers

* update elixir version and deps

* add basic module  docs

* remove IO.inspect call

* check if list is empty rather than traversing list for length

* revert empty list code

* duration tests

* add mime type tests

* use logger instread of inspect, remove todos

* replace list length check with Enum.empty

* replace list length check with !Enum.empty?

* numbers readability fix by using underscores on large numbers

* iucn parser replaced case with multiclause function and added test

* replace map and join with map_join

* fix multiple spec issues where map() must be inside a list

README.md

@@ -15,19 +15,20 @@ If you wish to invite this bot to your server, use [this link.](https://discord.
 
 ### Dependencies
 
-This application has been built and tested with Elixir 1.16 / OTP 26.
+This application has been built and tested with Elixir 1.18 / OTP 28.
 
 ```elixir
 # mix.exs
 
 defp deps do
     [
+      {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
       {:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false},
       {:nostrum, "~> 0.10"},
       {:httpoison, "~> 2.2"},
       {:image, "~> 0.55"},
       {:jason, "~> 1.4"},
-      {:logger_webhook_backend, "~> 0.0.2"},
+      {:logger_webhook_backend, "~> 0.0.4"},
       {:plug, "~> 1.12"},
       {:plug_cowboy, "~> 2.7"},
       {:quantum, "~> 3.5"}
@@ -40,9 +41,12 @@ defp deps do
 Below are the environment variables that you need to set for the program to function:
 
 ```
+# needed in development and production
 PLANTID_DISCORD_BOT_TOKEN=           client secret from the bot's application
 PLANTID_LOGS_DISCORD_WEBHOOK_URL=    webhook url for the log channel
 PLANTNET_API_KEY=                    API key for the PlantNet service
+
+# needed in production
 PLANTID_FILESERVER_URL               URL and port(if needed) for the http file server
 ```