Mpxj

* Handle duplicate custom field value unique IDs when reading MSPDI files.
* Handle missing remaining early start date when reading timephased data from a P6 schedule.

* When reading multiple Primavera schedules from the same source, MPXJ now ensures that instances of activity code definitions, user defined field definitions, locations, units of measure, expense categories, cost accounts, work contours, and notes topics are shared across projects. This will allow you to, for example, filter tasks from multiple projects using a `Location` instance. Previously each project had its own independent instances for each of these types, which could not be used across multiple projects.
* When reading Powerproject schedules, ensure that the Activity ID attribute for WBS entries is populated using Powerproject's Unique Task ID attribute.
* Add support for reading timephased planned work from MPP files for manually scheduled tasks (Contributed by Fabian Schmidt).

* Add missing constructors to `TimephasedCost` and `TimephasedWork` in MPXJ.Net.

* Make the MPXJ.Net assembly strong named.

* Implemented the `UserDefinedField.Builder` class.
* Marked the `UserDefinedField` constructor as deprecated. Use the builder class instead.
* Marked the `UserDefinedField.setDataType()` method as deprecated. Use the builder class instead.
* Updated to address an issue when writing XER files where a project does not have an explicit Unique ID value, and there are project UDF values.
* Added the convenience method `ActivityCode.addValue` to make it easier to add a value to an activity code.

* Updated to POI 5.3.0
* Add support for reading and writing timephased data for activities in P6 schedules which have a "manual" curve. (Note: MPXJ does not currently support translating timephased data between different applications, so timephased data read from an MPP file won't be written to a P6 schedule and vice versa).
* Add an attribute to the `ResourceAssignment` class to represent timephased planned work. This is read from/written to P6 as Budgeted Work.
* Update Phoenix schemas to ensure that cost types are represented as doubles.
* Updated to avoid reading apparently invalid resources from Project Commander files.
* Correct the `Finish` attribute for resource assignments when reading PMXML files.
* Improve accuracy of the `RemainingDuration` attribute for resource assignments when writing PMXML files.
* Improve recognition of non-working days when reading calendars certain PMXML files.
* Add support for the Resource Assignment field Remaining Units. (Note: this field defaults to the same value as Units if it is not explicitly populated).
* Ensure the Resource Assignment field Remaining Units is read from and written to P6 schedules.
* Improve handling of invalid calendar exception data when reading P6 schedules from XER files or a P6 database.
* Improve the implementation of the Unique ID sequence generator used by MPXJ to avoid issues when multiple classloaders are used.
* Deprecated the original `StructuredNotes` constructor. A new version of the constructor takes an additional `ProjectFile` argument.
* Deprecated the original `UserDefinedField` constructor. A new version of the constructor takes an additional `ProjectFile` argument.
* Add support for reading and writing the Project Website URL attribute for P6 schedules.
* Add support for the Notes attribute as part of the `ProjectProperties` class.
* Ensure that project notes are read from and written to PMXML files.
* Usability improvements to the Notes class hierarchy to make it easier to update notes.
* Improvements to notes handling when writing PMXML files to make it easier to construct structured notes using plain text.