1.0.0

• First production release

0.3.0

• Reintroduced possible null value for parameter array
• Added support for Semperton\Search\Filter
• Changed isValid() function to valid()
• Expression\Filter now implements Countable

0.2.2

• Fixed missing parentheses around sub filter expression

0.2.1

• Fixed bug where empty filter operator causes missing connection

0.2.0

• Removed possible null value for parameter array

0.1.0

• Fixed some bugs
• Better performance with function imports

0.0.1

• First release
• Ready for basic queries