v3.1.3 speed up encoding of utf8 and ascii text

Merge pull request #427 from JamesParrott/Slightly_faster

v3.1.3 speed up encoding of utf8 and ascii text

v3.1.2 In strict mode, raise error if whole chars encoded to pad bytes

Merge pull request #425, Raise error when strings end in code points …

v3.1.1 Warn if encoded text ends in pad bytes. Minimise pad bytes used in decodings.

Merge pull request #424 from JamesParrott/Test_utf16_encoded_field_names

v3.1.1 Warn if text encoding ends in pad bytes.  Minimise pad bytes used in decodings.

v3.1.0. Strict mode. Atomic Records. Robust(er) unicode handling

Unicode support made more robust and encoding bugs fixed

• Truncation of field names and text fields now respects unicode code point boundaries (fixes issues -
  416 and 148).
• Warnings raised if truncation, or replacing b" " with b"_" would corrupt encoded field names, -
  both if they would either be undecodable, or would silently decode to incorrect data (warns users
  if issue 421 applies).
• Correctly truncated field names are now stored in field instances, as would actually be seen in the file.
• New strict mode. Writer(strict=True) raises errors or refuse to create fields and text records with data that -
  would be truncated or cannot be correctly decoded back again by PyShp, exactly as given by the user.
• In strict mode, ascii spaces in encoded names are no longer replaced by ascii underscores at all
  (work around to avoid corrupting unicode field names - provides opt-in fix for issue 421).
• BREAKING. When reading .dbf files, Trailing ascii spaces in text fields before a null terminator char (in the -
  decoded string) is now removed (i.e. instead of .strip().rstrip('\x00') we now do: .rstrip("\x00").rstrip(" ")).
• BREAKING. Enclosing Whitespace other than trailing ascii spaces (0x20) after null chars in text fields is now -
  preserved, when reading .dbf files (fixes issue 418 - James feels this was a bug. Let him know if you think otherwise).
• BREAKING Trailing null chars other than null terminators & null padding bytes, followed by whitespace other than
  ascii spaces, are now preserved.
• Writing dbf records is now atomic.

ShpWriter.shape API Tweak (small breaking change).

• Make ShpWriter.shape return shape length in bytes (the
  same as for offset) not in 16 bit words.

Testing

• Include NullShapes in shp round trip test.
• En/decoding of Dbf files and Fields round trips correctly.

v3.0.13 Bug fix (read empty shp files)

Merge pull request #413 from JamesParrott/Test_shp_files_roundtrip

v3.0.13. Don't error when reading empty shp files (bug fix).

v3.0.12 points_3D ! Polylines and Polygons pass round trip tests

Merge pull request #409 from JamesParrott/Polylines_and_Polygons

v3.0.12. 3D Point coords

v3.0.11 Stricter shapes. PointZ and Multipoints round trip.

Merge pull request #408 v3.0.11 Stricter shapes. PointZ and Multipoin…

Bug fix - convert out of bounds m values to None.

Merge pull request #407 from JamesParrott/Hypothesis

v3.0.10 Bugfix. Ensure m < ISDATA becomes None on PointM. Add round tri…

v3.0.9 ShpReader, ShpWriter, ShxReader, and ShxWriter

What's Changed

• Make Reader and Writer stricter about their args. Use pathlib.Paths … by @JamesParrott in #401
• Add ShpReader, ShxReader, ShpWriter and ShxWriter. Reduce clutter from tests, by using temp dirs for writing shapefiles. by @JamesParrott in #402

Full Changelog: 3.0.8...3.0.9