Remove requirements.txt (redundant with pyproject.toml), pin lower bounds of dependencies

Author: apdavison

.github/workflows/tests.yml

@@ -19,8 +19,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install flake8 pytest pytest-cov pytest-mock
-          pip install -r requirements.txt
+          pip install -e ".[dev]"
       - name: Lint with flake8
         run: |
           # stop the build if there are Python syntax errors or undefined names

pyproject.toml

@@ -16,11 +16,11 @@ classifiers = [
 ]
 keywords = ["ebrains", "hbp", "metadata", "electrophysiology", "knowledge-graph"]
 dependencies=[
-    "ebrains-kg-core",
+    "ebrains-kg-core>=0.9.20",
     "openminds>=0.5.1",
-    "python-dateutil",
-    "tabulate",
-    "requests"
+    "python-dateutil>=2.0",
+    "tabulate>=0.8.0",
+    "requests>=2.20.0"
 ]
 
 [project.optional-dependencies]
@@ -29,6 +29,7 @@ dev = [
     "pytest",
     "pytest-cov",
     "pytest-mock",
+    "flake8",
     "coverage",
     "build",
     "setuptools",