Drop python 3.6

Author: tony

README.md

@@ -130,7 +130,7 @@ See donation options at <https://git-pull.com/support.html>.
 
 # More information
 
-- Python support: >= 3.6, pypy
+- Python support: >= 3.7, pypy
 - VCS supported: git(1), svn(1), hg(1)
 - Source: <https://github.com/vcs-python/vcspull>
 - Docs: <https://vcspull.git-pull.com>

poetry.lock

@@ -41,8 +41,8 @@ Changes = "https://github.com/vcs-python/vcspull/blob/master/CHANGES"
 vcspull = 'vcspull:cli.cli'
 
 [tool.poetry.dependencies]
-python = "^3.6"
-click = ">=7<8"
+python = "^3.7"
+click = ">=7<8.1"
 kaptan = "*"
 libvcs = "~0.10.1"
 colorama = ">=0.3.9"
@@ -66,7 +66,7 @@ coverage = "*"
 pytest-cov = "*"
 
 ### Format ###
-black = {version="==21.12b0", python="^3.6.2"}
+black = {version="==21.12b0"}
 isort = "*"
 
 ### Lint ###