Major milestone with public transport assignment

Major changes

• Feature pu t assignment by @pedrocamargo in #486

Fixes and minor improvements

• removes use of necessary sqlite3 connection cursors and cached connections by @pedrocamargo in #478
• Cleans non-needed code by @pedrocamargo in #482
• Adds support page by @pedrocamargo in #481
• Path computation on models with no centroids by @pedrocamargo in #472
• Better network skimming and path computation headers and typo fix by @Jake-Moss in #474
• fixes export of omx matrices by @pedrocamargo in #484

Full Changelog: v0.9.5...v1.0.0