Amulet-map-editor

Fixes
- Fixes an issue loading some sponge schematic files.
- Added the sponge schematic to the import tool.

Select tool improvements
- Added nudge buttons
- Moved text into lang file
- Added tooltips

Teleport tool improvements
- Reformatted the UI layout
- Added copy and paste support for the coordinates.
- Moved text into lang file
- Added tooltips

Set up nightly builds

Additions:
- A top down 2D view for easier navigation and viewing
- A chunk tool for modification of chunks
- A prune operation has been added to the chunk tool
- Importing and exporting of the sponge schematic format
- Drag and drop importing
- A better selection box
- Partially added language support
- Added a sky box with compass

Fixes
- fixed rain and some lighting issues
- fixed program hang when importing large structures
- fixed some renderer issues
- some threading issues
- disabled rendering when running operations to make them faster
- better support for modded worlds (still WIP)
- some errors with height maps

Changes
- Tools and operations have more control over the editor than they had before.
- Improved older OpenGL support
- Updated the leveldb library
- Cleaned up the pyinstaller build
- Structures are now handled in the same way that worlds are

Additions:
- A top down 2D view for easier navigation and viewing.
- A chunk tool for modification of chunks.
- A prune operation has been added to the chunk tool.
- Importing and exporting of the sponge schematic format
- Drag and drop importing
- A better selection box
- Partially added language support

Changes
- Moved logic out of the canvas and given control to the tools and operations.
- Improved OpenGL support
- Updated the leveldb library
- Cleaned up the pyinstaller build

Fixes the pick block button in the internal operations.
Modified the wx operation classes to increase what they are capable of. This will have broken most wx operations. see /pull/223
Fixed an issue exporting schematic files.
Fixed an issue with the nbt library.