Dev version format and pip install in github actions

[mpatrou]

Short description of the changes:

pip install -e . in github actions
dev version PEP 440-compliant.
next version method update

Long description of the changes:

Check list for the pull request

• I have read the [CONTRIBUTING]
• I have read the [CODE_OF_CONDUCT]
• I have added tests for my changes
• I have updated the documentation accordingly

Check list for the reviewer

• I have read the [CONTRIBUTING]
• I have verified the proposed changes
• best software practices
  • all internal functions have an underbar, as is python standard
  • clearly named variables (better to be verbose in variable names)
  • code comments explaining the intent of code blocks
• All the tests are passing
• The documentation is up to date
• code comments added when explaining intent

Manual test for the reviewer

pip instal -e .
inspired--version
should print 0.3.1.devxxxx

References

[KyleQianliMa]

Looks ok this is just installing in editable mode.