Bump version to 1.3.0a for next development cycle

[Copilot]

Increment minor version from 1.2.0 to 1.3.0a to prepare for next development cycle with alpha marker.

Changes

• VERSION tuple: Updated from (1, 2, 0, "final") to (1, 3, 0, "alpha") in openwisp_utils/__init__.py
• get_version() function: Enhanced to format alpha versions correctly
  • Includes patch version for non-final releases (1.3.0a vs 1.3a)
  • Omits implicit zero revision (1.3.0a vs 1.3.0a0)
  • Preserves backward compatibility for final/beta releases

Version Output

from openwisp_utils import get_version
print(get_version())  # Returns: "1.3.0a"

setuptools normalizes to 1.3.0a0 per PEP 440.

Original prompt

Update the module version by incrementing the minor version and adding an alpha suffix.

Requirements:

1. Find the current version in the module's version file (typically in setup.py, init.py, or similar configuration files)
2. If the current version is X.Y.Z, update it to X.(Y+1).0a
3. For example: if current version is 1.2.0, change it to 1.3.0a
4. Update all relevant files that contain the version number
5. Ensure the version format follows Python package versioning standards

The version bump should prepare the module for the next development cycle with an alpha release marker.

This pull request was created as a result of the following prompt from Copilot chat.

Update the module version by incrementing the minor version and adding an alpha suffix.

Requirements:

1. Find the current version in the module's version file (typically in setup.py, init.py, or similar configuration files)
2. If the current version is X.Y.Z, update it to X.(Y+1).0a
3. For example: if current version is 1.2.0, change it to 1.3.0a
4. Update all relevant files that contain the version number
5. Ensure the version format follows Python package versioning standards

The version bump should prepare the module for the next development cycle with an alpha release marker.

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[nemesifier]

Are these changes really needed? I think just bumping the version here would be enough.

[coveralls]

coverage: 97.365%. remained the same
when pulling 0ac5f35 on copilot/update-module-version-alpha
into e1577cf on master.