Project After Effects → Handy Seamless Transitions | Pack & Script v.3.0 - After Effects Script (Videohive)

Features
Over 470 dynamic transitions
For manual method requires After Effects CS5 and higher
For method using a HST Script requires After Effects CC.2014 and higher
For any resolutions. Including: HD | Full HD | 2K | 4K
For any aspect ratio regardless of orientation – portrait or landscape
Without mediahodlers (adjustment layers system)
Easily change duration of the transition
Ability to move a Zoom Target
Ability to use in Premiere Pro (via the Dynamic Link). Video tutorial here
Detailed manual is included. Also, you can see video tutorials here
Does not require advanced skills in After Effects
AEP-file of Promo video is included

Update 3.0 (02-23-2017)
+ Added new transition, including a new category: Distortion Power Zoom 2, Distortion Zoom 2, Glitch Overlay, Flares Overlay,
+ The new version of the script panel - HST Script v.3.0
+ New feature – Target Zoom