Crdroid Official 6.4

• Bumped to crdroid 6.4

• March Security Patch

• Switched kernel clang to 10.0.4

• Enabled back navigation bar arrow keys

• Add toggle to disable notifications 

• Improved Dark Themeing

• Added Launcher Customizations

• Some more cleanups and addons 

• lavender : Switched to File Based Encryption Method

• lavender : Updated Blobs from LA.UM.8.2.r1-05100-sdm660.0 

• lavender : Upstreamed Kernel to 4.4.215

• lavender : Merged LA.UM.8.2.r1-06200-sdm660.0 to kernel