Inmembrane

* Resurrected after a period of neglect.
* Removed deprecated CBS-DTU SOAP and TMBETA-NET plugins.
* Fixed lipop_scrape_web, tmhmm_scrape_web, added new signalp_scrape_web plugins (now used as defaults).
* Added Dockerfile(s).
* Enforce semantic versioning.

* Fixed LipoP and TMHMM web scrapers due to server side changes.
* TMB-HUNT plugin deprecated - server appears to be permanently offline
* Added result_poll_retries option to signalp_web, so test fails fast if job is stuck in PENDING state
* Made 'requests' v2.0.0 the lowest version for new installs
* Made default inmembrane.config use SOAP web services (*_web), included commented _scrape_web options in file.

* Bugfixes to tmhmm_scrape_web and lipop_scrape_web plugins
* Handle Python 2.6 when OrderedDict is absent.

* Added --version flag
* Report PSE loop length in gram_pos protocol
* Added tmhmm_scrape_web and lipop_scrape_web plugins (as default since CBS SOAP service seems currently broken)
* Added safe_seqid to be used by programs that munge or fail on seqids with funky punctuation

* Started CHANGELOG.