ES6 Modules, fixes, refactors

• Export JSONPatcherProxy as ES Module #57
• Inform about the patch mutability #55
• Fix strict mode #54
• Remove lodash devDependency #53
• Don't generate patch for a no-change set operation #45
• Do not proxify objects that are values of non-patchable array properties #47
• Improve/refactor tests and benchmarks #42
• Refactor for better code readability #36
• Bumped deps versions #34
• Updated TS definitions #29, #30, #31, #32

Full list of changes
v0.0.10...0.1.0-0

Warn when array props are accessed

Doing [].prop = 1 does not produce a patch. Warn users when they access array props.

Reflect before notifying about mutations

JSONPatcherProxy used to call the observer's callback before it reflected changes, giving access to outdated information. This is fixed now. Thanks to @warpech.

All details: #21