Creating new config with_section(None) seems broken

[clunion]

the example code below
Usage
Create a Ini configuration file.
results in the following error:
error[E0283]: type annotations needed
96 | conf.with_section(None)
| ^^^^^^^^^^^^ cannot infer type for type parameter S declared on the associated function with_section
|
= note: cannot satisfy _: std::convert::Into<std::string::String>

Please excuse if the fault is on my side,
i am a bit new to Rust, thus i have no idea yet how to suggest a fix.

[zonyitoo]

conf.with_section(None::<String>);

May be I can add a default type for generic parameter S.

[zonyitoo]

Added a new function

conf.with_general_section()

Already released in v0.15.3.