fix: Ignore packages with -1 as version from recommendation list

[arajkumar]

Supplement to #267 , ignores packages which has version as -1.

e.g. pypi, wsgiref has following properties.

{
    "requestId": "fd8f06ef-2b52-46aa-84c9-2975dd7149ed",
    "status": {
        "message": "",
        "code": 200,
        "attributes": {}
    },
    "result": {
        "data": [
            {
                "gh_issues_last_year_closed": [
                    -1
                ],
                "gh_issues_last_month_opened": [
                    -1
                ],
                "gh_prs_last_year_closed": [
                    -1
                ],
                "last_updated": [
                    1.53930382643E9
                ],
                "libio_usedby": [
                    "NUKnightLab/TimelineJS:8383",
                    "NUKnightLab/TimelineJS:8385",
                    "amvtek/EventSource:107",
                    "capitalone/cloud-custodian:879",
                    "capitalone/cloud-custodian:887",
                    "cayleygraph/cayley:10105",
                    "cayleygraph/cayley:10111",
                    "jeffh/Fox:599",
                    "lepture/flask-wtf:619",
                    "mobolic/facebook-sdk:1984",
                    "mobolic/facebook-sdk:1985",
                    "odoo/odoo:6888",
                    "odoo/odoo:6895",
                    "paypal/PayPal-Python-SDK:413",
                    "stormpath/express-stormpath:299"
                ],
                "gh_prs_last_month_closed": [
                    -1
                ],
                "ecosystem": [
                    "pypi"
                ],
                "libio_total_releases": [
                    "3"
                ],
                "vertex_label": [
                    "Package"
                ],
                "libio_dependents_repos": [
                    "35336"
                ],
                "gh_issues_last_year_opened": [
                    -1
                ],
                "gh_issues_last_month_closed": [
                    -1
                ],
                "gh_prs_last_year_opened": [
                    -1
                ],
                "libio_dependents_projects": [
                    "0"
                ],
                "latest_version": [
                    "-1"
                ],
                "name": [
                    "wsgiref"
                ],
                "libio_latest_version": [
                    "0.1.2"
                ],
                "tokens": [
                    "wsgiref"
                ],
                "package_relative_used": [
                    "not used"
                ],
                "libio_latest_release": [
                    1.150084534E9
                ],
                "gh_stargazers": [
                    -1
                ],
                "gh_forks": [
                    -1
                ],
                "package_dependents_count": [
                    -1
                ],
                "gh_prs_last_month_opened": [
                    -1
                ]
            }
        ],
        "meta": {}
    }
}

[codecov-io]

Codecov Report

Merging #268 (c2c3c60) into master (77459c0) will increase coverage by 2.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #268      +/-   ##
==========================================
+ Coverage   91.73%   93.81%   +2.07%     
==========================================
  Files          11        8       -3     
  Lines        1572      937     -635     
==========================================
- Hits         1442      879     -563     
+ Misses        130       58      -72     

Impacted Files	Coverage Δ
src/v2/recommender.py	100.00% <100.00%> (ø)
src/stack_aggregator.py
src/__init__.py
src/recommender.py

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[dgpatelgit]

lgtm