New column mapping API

CHANGELOG.md

@@ -1,11 +1,52 @@
 # Change Log
 
+## [1.0.0-alpha.3](https://github.com/cfilipov/TextTable/releases/tag/v1.0.0-alpha.3)
+
+* **This release contains breaking changes to the API**. This should hopefully be the last major breaking change to the API for a long time.
+* `TextTable<T>` construction closure now takes an instance of `T` instead of a `Config<T>`. `Config<T>` has been removed completely. Instead of calling `column(...)` on a `Config<T>` in the closure, you now return an array of `Column` instances. See example transition below for details.
+* **Fixed**: Missing/broken tests.
+* **Fixed**: Latex `tabular` environment contains incorrect alignments.
+* **Fixed**: Handle optional values in mapping.
+* **Fixed**: `FancyGrid` using pipe symbol instead of unicode drawing character for header separator.
+* All columns are now left-aligned by default (instead of right-aligning the first column by default).
+* `TextTableFormatter` has been renamed to `TextTableStyle` to avoid confusion with the Foundation [Formatters](https://developer.apple.com/reference/foundation/nsformatter) class. All references to the word "format" when referring to the type of table rendered have bee changed to "style".
+* The `TextTableStyle` protocol (formerly `TextTableFormatter `) is now simplified. All methods in `TextTableStyle` are now static, no state is maintained in `TextTableStyle`. The methods have also been consolidated (`row` instead of `beginRow`, `endRow`, `content`, `beginColumn`, etc...).
+* `TextTable<T>` and all the internal types are now value types instead of classes.
+* All built-in styles are case-less `enums` so they cannot be accidentally instantiated.
+
+### Known Issues in 1.0.0-alpha.3
+
+* Very little effort has but put into performance optimizations. String utilities in particular.
+* It should be possible to create columns without headers, but this hasn't been tested and likely doesn't work yet.
+
+### Transitioning to 1.0.0-alpha.3
+
+Before:
+
+```Swift
+let table = TextTable<Person> { t in
+    t.column("Name") { $0.name }
+    t.column("Age") { $0.age }
+    t.column("Birthday") { $0.birhtday }
+}
+```
+
+After:
+
+```Swift
+let table = TextTable<Person> {
+    [Column("Name" <- $0.name),
+     Column("Age" <- $0.age),
+     Column("Birthday" <- $0.birhtday)]
+}
+```
+
 ## [1.0.0-alpha.2](https://github.com/cfilipov/TextTable/releases/tag/v1.0.0-alpha.2)
 
 * Column truncation support. There is now an optional `truncate:` argument to `width`.
 * Added some documentation.
 
-##### Known Issues in 1.0.0-alpha.2
+### Known Issues in 1.0.0-alpha.2
 
 * Very little effort has but put into performance optimizations.
 * It should be possible to create columns without headers, but this hasn't been tested and likely doesn't work yet.