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GNU LESSER GENERAL PUBLIC LICENSEVersion 3, 29 June 2007Copyright (C) 2007 Free Software Foundation, Inc. [http://fsf.org/]Everyone is permitted to copy and distribute verbatim copiesof this license document, but changing it is not allowed.This version of the GNU Lesser General Public License incorporatesthe terms and conditions of version 3 of the GNU General PublicLicense, supplemented by the additional permissions listed below.0. Additional Definitions.As used herein, "this License" refers to version 3 of the GNU LesserGeneral Public License, and the "GNU GPL" refers to version 3 of the GNUGeneral Public License."The Library" refers to a covered work governed by this License,other than an Application or a Combined Work as defined below.An "Application" is any work that makes use of an interface providedby the Library, but which is not otherwise based on the Library.Defining a subclass of a class defined by the Library is deemed a modeof using an interface provided by the Library.A "Combined Work" is a work produced by combining or linking anApplication with the Library. The particular version of the Librarywith which the Combined Work was made is also called the "LinkedVersion".The "Minimal Corresponding Source" for a Combined Work means theCorresponding Source for the Combined Work, excluding any source codefor portions of the Combined Work that, considered in isolation, arebased on the Application, and not on the Linked Version.The "Corresponding Application Code" for a Combined Work means theobject code and/or source code for the Application, including any dataand utility programs needed for reproducing the Combined Work from theApplication, but excluding the System Libraries of the Combined Work.1. Exception to Section 3 of the GNU GPL.You may convey a covered work under sections 3 and 4 of this Licensewithout being bound by section 3 of the GNU GPL.2. Conveying Modified Versions.If you modify a copy of the Library, and, in your modifications, afacility refers to a function or data to be supplied by an Applicationthat uses the facility (other than as an argument passed when thefacility is invoked), then you may convey a copy of the modifiedversion:a) under this License, provided that you make a good faith effort toensure that, in the event an Application does not supply thefunction or data, the facility still operates, and performswhatever part of its purpose remains meaningful, orb) under the GNU GPL, with none of the additional permissions ofthis License applicable to that copy.3. Object Code Incorporating Material from Library Header Files.The object code form of an Application may incorporate material froma header file that is part of the Library. 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：Code submit frequency
：React/respond to issue & PR etc.
：Well-balanced team members and collaboration
：Recent popularity of project
：Star counts, download counts etc.