Update README

README

@@ -3,22 +3,26 @@
 
 rbackup - An rsync-based backup tool
 ====================================
+
 A tool that automates the use of rsync and extra features for package manager backups.
 
 Features
 --------
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 * Snapshot-based backup management
 * Backups of deleted and modified files
 * Creation of installed package lists and backup of package manager databases
 
 Advanced Features
 ^^^^^^^^^^^^^^^^^
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 * rbackup depends on the filesystem that stores the repository to provide features such as checksumming, deduplication, and data integrity verification
 * Encryption must be handled by an external program, this is out of scope for rbackup
 * xattrs and acl's are handled by rsync but must be a supported feature of the filesystem the repository is stored on
 
 Target Directories
 ------------------
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 * /boot/loader
 * /etc
 * /home
@@ -32,6 +36,7 @@ Target Directories
 
 Backup Directory Hierarchy
 --------------------------
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 basedir
 ├── current
 └── data
@@ -54,6 +59,7 @@ basedir
 
 Implementation Notes
 --------------------
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 * pathlib is used for path handling
   * Only absolute paths are used internally for consistency
 * Use --link-dest=
@@ -62,22 +68,25 @@ Implementation Notes
 
 To-do
 -----
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 * Add __enter__ and __exit__ for PackageManager lockfiles to prevent transactions during backup
 * Create snapshot manipulation script
 * Interactive cleanup script
   * Repository.__delitem__()
   * Repository.delete_snapshot(name)
-* Test functions in config module
-  * load_list_from_option()
 
 Dependencies
 ------------
+
 Runtime
 ^^^^^^^
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+* python >=3.7
 * rsync
 
 Build/Testing
 ^^^^^^^^^^^^^
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 * pytest
 * setuptools
 * hypothesis