Add package infos

Author: amkay

src/main/groovy/com/github/amkay/gradle/gitflow/dsl/package-info.groovy

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+/**
+ * Provides all classes for the well-known <em>keyword-based configuration</em> or <em>DSL</em> that all default
+ * <em>Gradle</em> plugins provide.
+ *
+ * <p>
+ *     The entry point to this configuration is {@link GitflowPluginExtension}.
+ * </p>
+ */
+package com.github.amkay.gradle.gitflow.dsl;

src/main/groovy/com/github/amkay/gradle/gitflow/package-info.groovy

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+/**
+ * For a detailed description of this <em>Gradle</em> plugin please see the Project page on <em>GitHub</em>.
+ */
+package com.github.amkay.gradle.gitflow;

src/main/groovy/com/github/amkay/gradle/gitflow/strategy/package-info.groovy

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+/**
+ * Provides the strategies for inferring the version of the project to which the plugin is applied.
+ *
+ * <p>
+ *     The entry point to this package is the interface {@link Strategy}.
+ * </p>
+ *
+ * <p>
+ *     There is exactly one class for each type of branch defined in the <em>Gitflow Branching Model</em> that
+ *     provides a strategy to infer the version of the project.
+ *     Furthermore, there is {@link DetachedHeadStrategy} that applies if the current commit is a <strong>detached
+ *     head</strong>.
+ * {@link AbstractStrategy} is the base class of these strategies and provides common logic like logging.
+ * </p>
+ */
+package com.github.amkay.gradle.gitflow.strategy;

src/main/groovy/com/github/amkay/gradle/gitflow/version/package-info.groovy

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+/**
+ * Contains the object that is set as <code>version</code> property on the project to which this plugin is applied.
+ *
+ * The most important aspects of this <code>version</code> object are:
+ *
+ * <ul>
+ *     <li>
+ *         The version is <strong>lazily</strong> inferred. That means the plugin only interacts with Your
+ *         <em>Git</em> repository if a method on this <code>version</code> object is called, e.g. <code>toString()
+ *         </code>. This functionality is realized by {@link DelayedVersionWithType}, which is the actual type of the
+ *         set <code>version</code> object.
+ *     </li>
+ *     <li>
+ *         This {@link DelayedVersionWithType} delegates to {@link VersionWithType}, which provides the real
+ *         functionality of the <code>version</code> object.
+ *     </li>
+ *     <li>
+ *         The class {@link VersionWithType} actually delegates to {@link Version} and provides additional
+ *         functionality to determine the {@link VersionType type} of the inferred version.
+ *     </li>
+ * <ul>
+ */
+package com.github.amkay.gradle.gitflow.version
+
+import com.github.zafarkhaja.semver.Version;