[mod] #60: Drop Python 3.5 support

- CI: Raise container Python version to v3.6
- pyproject.toml: Set v3.6 as minimal supported version
- Update documentation

.gitlab-ci.yml

@@ -7,7 +7,7 @@ stages:
 
 variables:
   DOCKER_IMAGE: "registry.duniter.org/docker/python3/poetry"
-  PYTHON_VERSION: "3.5"
+  PYTHON_VERSION: "3.6"
 
 image: $DOCKER_IMAGE/$PYTHON_VERSION:latest
 

README.md

@@ -17,7 +17,7 @@ This library is used by two clients:
 - Sign/verify and encrypt/decrypt messages with the Duniter credentials
 
 ## Requirements
-- Python >= 3.5.3
+- Python >= 3.6.8
 - [aiohttp >= 3.6.1](https://pypi.org/pypi/aiohttp)
 - [pylibscrypt](https://pypi.org/pypi/pylibscrypt)
 - [libnacl](https://pypi.org/pypi/libnacl)

docs/index.rst

@@ -16,7 +16,7 @@ Duniterpy helps to handle the following problem :
 Requirements
 ------------
 
-Duniterpy requires Python 3.5.x minimum.
+Duniterpy requires Python 3.6.x minimum.
 
 Installation
 ------------

pyproject.toml

@@ -24,7 +24,7 @@ requires = ["poetry>=0.12"]
 build-backend = "poetry.masonry.api"
 
 [tool.poetry.dependencies]
-python = "^3.5.3"
+python = "^3.6.8"
 aiohttp = "^3.6.1"
 jsonschema = "^3.0.2"
 pypeg2 = "^2.15.2"
@@ -35,7 +35,7 @@ libnacl = "^1.6.1"
 pyaes = "^1.6.1"
 
 [tool.poetry.dev-dependencies]
-black = { version = "^20.8b1", python = "^3.6" }
+black = "^20.8b1"
 mypy = "^0.730"
 pylint = "^2.4.2"
 sphinx = "^3.0.2"