v1.1.0

Add crypto package for AES-GCM and bcrypt, and implement EchoErrorHandler adapter for global error handling

v1.0.0

config: Environment and File-based generic configuration loading.
api: Helper structs and utilities for the Echo web framework (extensible to other frameworks like Chi/Gin).
httperr: Structured and actionable error types for web APIs (ServiceError).
logger: Generic JSON/text logger wrapping log/slog with Context extractors and multi-handler fan out.
pgsql: Configurable PostgreSQL connection helpers with transaction context wrappers.
sanitizer: Extensible, configuration-driven HTML sanitization (prevents XSS).
timeutil: Timestamp and pointer time utilities.
uuidutil: Common identifier types, mapping safely to database/sql driver implementations.
validator: Framework-agnostic validation helpers over go-playground/validator with strict JSON decoding utilities.
validator/echo: Echo integration helpers (binding + strict validation) without coupling the core validator package to Echo.