1.3.2

now works and passes tests with Lua 5.3
utils.import will NOT override global symbols (import 'math' caused global type() to be clobbered)
Updated pl.dir.file_op to return true on success and false on failure...
workaround for issues with pl.lapp with amalg.lua - will look at global LAPP_SCRIPT if arg[0] is nil

Add Python style url module for quote and unquote.
stringx.quote_string, which scans for embedded long-string quote matches and escapes them by creating a long-string quote.
issue #117: tablex.range now works with decreasing numbers, consistent with numerical for loop
utils.import will NOT override global symbols (import 'math' caused global type() to be clobbered)
issue #125: DOCTYPE ignored in xml documents as well
Allow XML tostring() function to customize the default prefacing with
More Robust Quoted Strings
lapp: improved detection of unsupported short flags

1.3.0

class: RIP base method - not possible to implement correctly
lapp: short flags can now always be followed directly by their value, for instance, -I/usr/include/lua/5.1
Date: new explicit Date.Interval class; toUTC/toLocal return new object; Date.__tostring always returns ISO 8601 times for exact serialization. +/- explicit operators. Date objects are explicitly flagged as being UTC or not.

All tests pass with no-5.1-compatible Lua 5.2; now always uses utils.load and utils.unpack is always available.
types: new module containing utils.is_xxx methods plus new to_bool.
class: can be passed methods in a table (see test=klass.lua). This is particularly convenient for using from Moonscript.
general documentation improvements, e.g class

utils.set(get)fenv always defined (not set as globals for 5.2 anymore!). These are defined in new module pl.compat, but still available through utils.
class.Frodo now puts 'Frodo' in current environment

lapp.add_type was broken (Pete Kazmier)
class broke with classes that redefined __newindex
Set.isdisjoint was broken because of misspelling; default ctor Set() now works as expected
tablex.transform was broken; result now has same keys as original (CoolistheName007)
xml match not handling empty matches (royalbee)
pl.strict: assigning nil to global declares it, as God intended. (Pierre Chapuis)
tests all work with pl.strict
5.2 compatible load now respects mode
tablex.difference thought that a value of false meant 'not present' (Andrew Starke)

tablex.sort(t) iterates over sorted keys, tablex.sortv(t) iterates over sorted values (Pete Kazmier)
tablex.readonly(t) creates a read-only proxy for a table (John Schember)
utils.is_empty(o) true if o==nil, o is an empty table, or o is an empty string (John Schember)
utils.executeex(cmd,bin) returns true if successful, return code, plus stdout and stderr output as strings. (tieske)
class method base for calling inherited methods (theypsilon)
class supports pre-constructor _create for making a custom self (used in pl.List)
xml HTML mode improvements - can parse non-trivial well-formed HTML documents. xml.parsehtml is a parse function, no longer a flag
if a LOM document has ordered attributes, use these when stringifying
xml.tostring has yet another extra parm to force prefacing with
lapp boolean flags may have true default
lapp slack mode where 'short' flags can be multi-char
test.asserteq etc take extra arg, which is extra level where error must be reported at
path.currentdir,chdir,rmdir,mkdir and dir as alias to lfs are exported; no dependencies on luafilesystem outside pl.path, making it easier to plug in different implementations.

(These are all now defined in pl.utils)

Issue 13 seq.sort now calls seq.copy
issue 14 bad pattern to escape trailing separators in path.abspath
lexer: string tokens broken with some combinations
lexer: long comments broken for Lua and C
stringx.split behaves according to Python spec; extra parm meaning 'max splits'
stringx.title behaves according to Python spec
stringx.endswith broken for 2nd arg being table of postfixes
OrderedMap.set broken when value was nil and key did not exist in map; ctor throws error if unhappy

pretty.write() always returns a string, but will return also an error string if the argument is not a table. Non-integer indices between 1 and #t are no longer falsely considered part of the array
stringx.expandtabs() now works like the Python string method; it will expand each field up to the next tab stop
path.normcase() was broken, because of a misguided attempt to normalize the path.
UNC specific fix to path.abspath()
UNC paths recognized as absolute; dir.makedir() works here
utils.quit() varargs broken, e.g. utils.quit("answer was %d",42)
some stray globals caused trouble with 'strict'