Add: statistics module implementing basic statistics functions for arrays.
Change: [os.fs] reverting erroneous changes (possibly due to outdated MinGW).
Add: [binary] reading binary data from strings, reading and writing bit ranges.
Change: moving Base64 support from xml to string.base64.
Add: [sync] guard type for synchronized concurrent data access.
Fix: [sync] header.
Add: [os.fs] fs.ls() to list directory content (fast&plain), minor changes.
Remove: fs.pwd().
Fix: MinGW compatibility issues.
Change: [os.fs] file size changing on Windows, minor changes.
Add: [os.fs] fs.home() to get system-dependent home directory.
Add minor changes to DaoJIT.