* Refactor all actions into more files for easier management
   * Loads into load-*-actions.ts
   * CUURDS into create|update|upsert|replace|delete-actions.ts
   * DeleteByKeys into delete-by-key-actions.ts
   * Edits into edit-actions.ts
   * Selections into selection-actions.ts
   * Deselections into deselection-actions.ts
 + Add new *IfNecessary loader actions for each type of load
 + Add tsdoc to all load actions
 * Update library index/public api to reference all actions from new files
 * Update all otehr action references throughout library
 ^ Bump library version to 0.5.0-beta.3

Phase #1: This is an initial refactoring of action files for the if-necessary work

Issue #144

 * Introduce to `defaultMaxAge` to IEntityOptions
 + Add EntityAge with predefined common ages for use with `defaultMaxAge`
 * Update @entity decorator to support passing name in only or options or both
 > Move key decorator tokens into entity-tokens.ts
 > Extract entity decorator into its own file entity-decorator.ts
 > Extract key decorator into its own file key-decorator.ts
 * Update index/public api to reference all exports from new locations
 * Added EntityAge enum to public api
 * Removed all imports from '../..'

Issues #144 #141

 + Add LoadIfNecessary action
 + Add LoadAllIfNecessary action
 + Add LoadManyIfNecessary action
 + Add LoadPageIfNecessary action
 + Add LoadRangeIfNecessary action
 * Export new actions from public api
 + Add new operators for if necessary loads
 + Add new effects for if necessary loads
 * Include new effects in standard modules
 * Export new effects from public api
 + Add stateNameOfEntity utility function
 * Update builders to use new entityStateName function

Issue #144