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

TODO

@@ -0,0 +1,27 @@
+# 📝 Project TODOs
+
+## 🚀 High Priority
+
+- [x] Update deps and run on Elixir 1.18 / otp 28
+- [ ] Run static analysis tools and fix code
+- [ ] Increase test coverage
+- [ ] Fix spec errors
+- [ ] Improve error return message
+
+## 📦 Medium Priority
+
+- [ ] - add credo, dialyxir and test to GH actions
+- [ ] - use Req instead of HTTPoison
+
+## 🛠️ Low Priority
+
+- [ ] add checks on branch push / PR creation
+- [ ] add specs where missing
+
+## 📚 Documentation
+
+- [ ]
+
+---
+
+✅ Keep this file updated as tasks are completed. Use `git diff` to track progress.