- Add GetFloat64 and GetInt64 methods to ConfigManager and package-level API
- Fix README precedence: actual order is Set > env > file > default
(was incorrectly documented as file > env > default)
- Fix GetStringMap return type in API table: map[string]any, not map[string]string
- Bump Go to 1.26.1
- Add tests for all new getters (coverage 94.7% → 95.2%)
- collapse() now applies env vars for keys present in fileConfig, not
just defaultConfig. Previously, env vars couldn't override file values
unless a default was also set for that key.
- SetDefault no longer pollutes overrideConfig; it correctly resolves
the value by checking override > env > file > default.
- Remove unused explicitDefaults field and UseExplicitDefaults method.
- Add IsSet, AllKeys, AllSettings methods + package-level wrappers.
- Add missing package-level wrappers: Get, SetBool, SetString,
SetConfigDir, WithEnvPrefix.
- Add tests for all new methods and the env-over-file-without-default
fix.
