update changelog

CHANGELOG.md

@@ -7,6 +7,47 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.0.0] - 2023-12-19
+
+### Added
+
+- `OpenSoutheners\ByteUnitConverter\MetricSystem` enum for decimal or binary metric systems
+- `OpenSoutheners\ByteUnitConverter\DataUnit` enum for bytes or bits data units
+- In order to support long numbers most-precisive operations now this library requires BCMath PHP extension
+- `ByteUnitConverter::toArray` method to serialise to array
+- `ByteUnitConverter::__toString` method to serialise to string with the closest unit appended
+- `ByteUnitConverter::__serialize` & `ByteUnitConverter::__deserialize` methods to object serialization and deserialization
+- `ByteUnit::lowerThan` method to check current unit lower than specified (opposite than already available `greaterThan`)
+- `ByteUnitConverter::new` convenience method to create an instance of _ByteUnitConverter_ class
+- `ByteUnitConverter::usingBits` & `ByteUnitConverter::usingBytes` to switch data units (**using bytes by default**)
+- `ByteUnitConverter::asRound` while precision method only operates during decimal conversions, **this method will return a round number with no decimals** (defaulted to false). E.g:
+
+```php
+(string) ByteUnitConverter::new('1924')->toKiB(); // "1.87 KiB"
+(string) ByteUnitConverter::new('1924')->asRound()->toKiB(); // "2 KiB"
+```
+
+### Fixed
+
+- Support to long numbers (floats or integers on PHP must be strings)
+- Working with conversions sometimes returns float numbers when integers were the only allowed
+- Correctness in all conversions and comparisons between different systems (**decimal to binary**, **bytes to bits**...)
+
+### Changed
+
+- `OpenSoutheners\ByteUnitConverter\DecimalByteUnit` & `OpenSoutheners\ByteUnitConverter\BinaryByteUnit` replaced by `OpenSoutheners\ByteUnitConverter\ByteUnit`
+- Precision argument to `conversion` and `toBytesFromUnit` methods 
+- `to*` methods (`toTB`, `toGB`, `toMB`, etc...) now returns instance instead of number. Use the following to get it casted to a string:
+
+```php
+(string) ByteUnitConverter::new('1024')->toKiB(); // "1.00 KiB"
+```
+
+### Removed
+
+- `ByteUnitConverter::conversion` static method (simplified to `ByteUnitConverter::new()...`)
+- `ByteUnitConverter::toBitsFromUnit` static method (we only use bytes as a starter, can switch to bits while having an instance but not before)
+
 ## [1.0.0] - 2023-10-29
 
 ### Added