no pinning of dependencies (#667)

* no pinning of dependencies

* don't update hypothesis

* bump version

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "clkhash"
-version = "0.18.0"
+version = "0.18.1"
 description = "Encoding utility to create Cryptographic Linkage Keys"
 license = "Apache"
 authors = ["Brian Thorne", "Wilko Henecka", "Guillaume Smith"]
@@ -28,16 +28,16 @@ classifiers = [
 
 [tool.poetry.dependencies]
 python = ">=3.8,<4.0"
-bitarray = "2.6.0"
-cryptography = "40.0.2"
-mypy_extensions = "0.4.3"
-tqdm = "4.64.1"
-pyblake2 = { version = "1.1.2", python = "<3.6" }
-jsonschema = "4.16.0"
+bitarray = "^2.6.0"
+cryptography = "^40.0.2"
+mypy_extensions = "^0.4.3"
+tqdm = "^4.64.1"
+pyblake2 = { version = "^1.1.2", python = "<3.6" }
+jsonschema = "^4.16.0"
 
 [tool.poetry.group.dev.dependencies]
-pytest = "7.1.2"
-pytest-cov = "3.0.0"
+pytest = "^7.1.2"
+pytest-cov = "^3.0.0"
 pytest-runner = "^6.0.0"
 nbval = "^0.10.0"
 requests-mock = "^1.10.0"