Atom 1.25.0

What's new in this version:

- Electron has been upgraded to 1.7.11
- Support greatly improved syntax highlighting and code folding with a next-generation parsing system called tree-sitter. See the pull request for details about opting in to try it out
- Dialogs launched with the Atom API, including confirm and save, may now be asynchronous. Add a callback to atom.confirm() and showSaveDialog calls to opt-in to the asynchronous forms
- Python language support is being overhauled substantially and now supports function annotations, async functions, string formatting, f-strings, and binary strings
- style attributes within HTML documents are tokenized as CSS
- The GitHub package has a configuration setting to control automatic hard-wrapping of commit messages composed in the mini-editor
- The GitHub package's diff view no longer scrolls when it shouldn't
- Filemode changes and changes to symlinks are shown and handled properly by git operations
- Duplicate snippet keys are an error and prevent the loading of erroneous user snippets
- The spell-check package supports an excludedScopes setting to prevent spellchecking from being performed on specific grammatical constructs
- Window dimensions are saved on resize rather than blur, which improves reliability
- atom --wait can reuse an existing window and return when the named buffers or folders are closed
- Some TextEditor settings may be preserved when the language mode changes
- atom.commands.dispatch() returns a Promise that resolves after all handlers complete
- Perform all configuration file I/O in the main process, to prevent race conditions that occur when multiple windows interact with the configuration file at once
- Enable snippets within strings and comments
- TypeScript files with a .tsx extension are now discovered by custom transpilers
- Fixed an issue where panes could not be dragged into closed docks