Added distributed architecture flag

v2.0.6

added distributed architecture flag

Added migration methods

See the database section in the readme.

Update readme

Added a note about always resolving the singleton and not creating instances of the Snowflake service.

Creating instances risks collisions.

Fix for null values

v2.0.3

fix for null values on cast

Fix return type

v2.0.2

fix return type

Added model cast

This minor release adds an Eloquent model cast that makes it easy to convert Snowflakes between integers and strings when saving them in the database vs passing them from PHP to the front-end e.g. for JavaScript, which doesn't support 64-bit integers.

Rollback conversion to integers

This is a major release owing to a breaking change in the snowflake() global helper. In version 1, this converted the generated string into an integer. While fine for PHP, some languages such as JavaScript, don't support 64-bit integers and will truncate them. In order to prevent this, Snowflakes should exist as strings (even though they are integers).

The helper now returns a string.

Initial release

Please review the readme for more details.