Fix indexmap support and break multiline support a little more

Author: finnhartshorn

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "bf_configparser"
-version = "1.1.0"
-authors = ["QEDK <qedk.en@gmail.com>"]
+version = "1.1.1"
+authors = ["finnhartshorn+bfconfigparser@gmail.com"]
 edition = "2021"
 description = "A simple library for parsing and writing configuration files based on INI like file formats used in Zoo Tycoon (2001)."
 homepage = "https://github.com/openztcc/bf-configparser"
@@ -16,7 +16,7 @@ categories = ["config", "encoding", "parser-implementations"]
 maintenance = { status = "actively-developed" }
 
 [dependencies]
-indexmap = { version = "2.1.0", optional = true }
+indexmap = { version = "2.2.6", optional = true }
 tokio = { version = "1.35.1", optional = true, features = ["fs"] }
 
 [dev-dependencies]

src/ini.rs

@@ -835,14 +835,13 @@ impl Ini {
 
                         let value = trimmed[delimiter + 1..].trim().to_owned();
 
-                        match valmap.entry(key) {
-                            Entry::Vacant(e) => { e.insert(Some(vec![value])); }
-                            Entry::Occupied(mut e) => {
-                                match e.get_mut() {
-                                    Some(x) => { x.push(value); }
-                                    None => { e.insert(Some(vec![value])); }
-                                }
+                        if valmap.contains_key(&key) {
+                            match valmap.get_mut(&key).unwrap() {
+                                Some(x) => { x.push(value); }
+                                None => { valmap.insert(key.clone(), Some(vec![value])); }
                             }
+                        } else {
+                            valmap.insert(key.clone(), Some(vec![value]));
                         }
                     }
                 }