Cql2 (#70)

* fix in, between, and not to match cql1 spec

* stage version update

* add support for cql2

* merging this pr with cqlfixes branch

* add more tests

* add fix and tests for using conf in search

Author: bitner

docker-compose.yml

@@ -1,3 +1,4 @@
+version: "3"
 services:
   dev:
     container_name: pgstac-dev

pypgstac/pypgstac/__init__.py

@@ -1,2 +1,2 @@
 """PyPGStac Version."""
-__version__ = "0.3.6"
+__version__ = "0.4.0"