Configuraptor

Fix
* If nested key is missing, don't crash but return empty data (and deal with error handling later) ([`822b671`](https://github.com/trialandsuccess/configuraptor/commit/822b67103a46245b1c4a958f1b809bbcf083f47f))

Feature
* Allow defining custom converters for `load_into(..., convert_types=True)` using `configuraptor.converter` ([`2cf8c44`](https://github.com/trialandsuccess/configuraptor/commit/2cf8c44f6ecb41480f5bcc71385abbf668681ef1))
* Support custom File types using `configuraptor.loader` ([`4d5ccb3`](https://github.com/trialandsuccess/configuraptor/commit/4d5ccb3868f4cae4c733dc12e134e28b0aee2d1a))

Documentation
* **readme:** Added info about .env and .ini ([`c6acc09`](https://github.com/trialandsuccess/configuraptor/commit/c6acc09391f9d5da1005aa64739032260d362c1c))

Feature
* Support .ini files and fix `convert_types` for recursion ([`9333029`](https://github.com/trialandsuccess/configuraptor/commit/9333029485eea936153320381181326ce862cfe6))

Feature
* **dotenv:** Support dotenv and add `lower_keys` and `convert_types` to `load_into` for dotenv ([`4d41197`](https://github.com/trialandsuccess/configuraptor/commit/4d41197a5d31cd623afb1f0ae61f720f27533a33))

Feature
* **init:** Allow ([args], {kwargs}) and [args] and {kwargs} for init! ([`0d19df8`](https://github.com/trialandsuccess/configuraptor/commit/0d19df8c47093fc35e9713672e2067c156cc7d47))