Vhelpers

------------------

**Added** vpath.get_dirs()

**Changed** vpath.get_files(pattern)

**Changed** vdict.filter_keys(exclude)

------------------

**Deleted** vcfg

**Added** vstr.join(), vstr.join_lines()

**Added** vdict.invert()

**Added** vstr.split_idx()

**Added** vdict.md5hash()

**Added** vdict.sha256hash()

**Changed** vdict.filter_keys()

**Changed** vdict.pop()

-------------------

**Changed** vre.cmd_value(flags)

-------------------

**Added** vdict.filter_keys()

**Added** vcfg.cmd_value()

**Added** vre.cmd_value()

-------------------

**Added** vlist.to_lstr()

-------------------

**Added** vpath.to_dir()