Merge pull request #147 from ken-lauer/fix_empty_float

FIX: handle potential empty string case for pytypes

Merge pull request #144 from bmad-sim/parser_for_lord_control

Add parsers for the new `lord_control` and `slave_control` Tao pipe commands

Merge pull request #142 from bmad-sim/env-doc-correction

Added that ACC_ENABLE_SHARED_ONLY=Y is acceptable.

Merge pull request #135 from ken-lauer/enh_unique_ids

ENH: unique element ID helpers

Merge pull request #110 from ken-lauer/doc_particlegroup_overlays

DOC: add floor plan plot with ParticleGroup plot overlays example

Merge pull request #133 from ken-lauer/perf_plot_updates

PERF: use array buffer methods for plot curve line/symbol data retrieval

Merge pull request #131 from ken-lauer/enh_pyargs

ENH: `pytao --pyplot` and `--pyscript` and fix `TaoInitializationError`

Merge pull request #127 from ken-lauer/enh_tqdm

 FIX: Tao.track_beam() case issue

Merge pull request #125 from ken-lauer/enh_tqdm

ENH: tqdm progress bar for Tao.track_beam

Merge pull request #112 from ken-lauer/enh_line_width_scale_factor

ENH: add line width scaling factor for matplotlib/bokeh