Changelog for toml-parser-1.2.0.0

Revision history for toml-parser

Remove FromTable class. This class existed for things that could be matched specifically from tables, which is what the top-level values always are. However FromValue already handles this, and both classes can fail, so having the extra level of checking doesn't avoid failure. It does, however, create a lot of noise generating instances. Note that ToTable continues to exist because toTable isn't allowed to fail, and when serializing to TOML syntax you can only serialize top-level tables.
Extracted Toml.FromValue.Matcher and Toml.FromValue.ParseTable into their own modules.
Add pickKey, liftMatcher, inKey, inIndex, parseTableFromValue to Toml.FromValue
Replace genericFromTable with genericParseTable. The intended way to derive a FromValue instance is now to write:
```
instance FromValue T where fromValue = parseTableFromValue genericParseTable
```

Add Toml.FromValue.Generic and Toml.ToValue.Generic
Add Alternative instance to Matcher and support multiple error messages in Result
Add Data and Generic instances for Value